SD-06-_SMF_Pedestrian_Walkway_Hub_Flight_Paths_-_Structural_Calculations_-_Approved.pdf

Buehler www.buehlerengineering.com

STRUCTURAL CALCULATIONS

FOR

SMF AIRPORT HUB ARTWORK

BIRD FLIGHT PATHS

SACRAMENTO, CA

05/24/2025

Client: David Brooks Buehler Principal in Charge: JAH Buehler Project Engineer: NAH

Buehler Job No.: 2025-0030

CLIENT BY SHEET NO.

DATE

PROJECT

PROJECT NO.

SMF Art

NAH

SMF HUB - Flight Path Artwork

The project consists of suspending 10 individual pieces of tubular shaped aluminum extrusions from the structural steel roofs of the Hub building at SMF's new walkway expansion project. The SMF Hub building's roof has been designed to support artwork within a certain loading parameters. The artwork relating to this calculation package does not exceed those parameters.

The tubular pieces will be constructed using cast aluminum that is approximately 3/16" thick, with max widths of ~11" and minimum widths of ~ 1". Sections will be fabricated in 30" lengths and welded together to form roughly 10'-0" sections. These sections will then be connected together on-site with 1/4" bolted connections at overlapping sleeves, allowing the 10'-0" sections to form each of the 10 full "flight paths".

Support of each of these sections will be achieved using 1/8" diameter aircraft cable and Gripple connectors. These connectors are rated for over 150 lbs each and will connect to a unistrut support system installed above the ceiling of the Hub building.

Laterally, these pieces will be largely unsupported, allowed to swing freely during a seismic event or under typical interior wind differences. However, where the pieces come within 18" of a structural member (curtain wall, structural column, structural beam, interior walls), restraints will be added to limit the movement of these pieces. For simplicity, each of these restraints will be designed using the Fp forces of the piece per chapter 13 of ASCE 7-16.

The following calculations are provided:

1) Weights tributary to each hanger position.

2) Above ceiling structural designs.

3) Calculations of free movement.

4) Calculations for above ceiling bracing for each hanger point.

5) Calculations for sway restraints.

The next two pages shows the calculated loads based on a tributary weight for each cable.

The table below shows the weight used for each diameter of tube section as well as a moment capacity check for the tube of each diameter spanning 12ft.

wall thick 0.1875 Fy = 6.5 ksi

Span = 12 ft

Diameter Weight/ft S (in^3) Pu (lbs) Mu ft-lbs Mall ft-lb

0.5 0.2 0.012 2.6 3.93 3.96

1 0.6 0.083 6.8 10.23 26.98

2 1.3 0.443 15.2 22.82 143.73

4 2.7 2.045 32.0 48.00 663.33

6 4.1 4.825 48.8 73.18 1564.94

8 5.5 8.783 65.6 98.37 2848.64

10 6.9 13.918 82.4 123.55 4514.46

11 7.6 16.928 90.8 136.14 5490.65

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

COMPRESSION

POST TO TOP OF

METAL STUD WALL

PER

COMPRESSION POST

TO CURTAIN WALL

HORIZONTAL MULLION

PER

S3.0

S3.0

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

COMPRESSION POST

TO CURTAIN WALL

HORIZONTAL MULLION

PER 9

S3.0

600 Q STREET, SUITE 200

SACRAMENTO, CA 95811

916 443 0303

DRAWN BY:

DATE:

SHEET NUMBER:PROJECT NUMBER:

SHEET TITLE:

PROJECT NAME:

/2

/2

:1

:1

A

M C

U s e rs

\N ic k H

\D o c u m e n ts

\2

-0

S M

F H u b

A rt

P ro je c t_

R

C e n tr a l_ h e rs k e d a l.

rv t

Flight Path A

S2.1A Author

REVISIONS

NO. DESCRIPTION DATE

DETAIL NO SCALE

S2.1A

A-1

DETAIL NO SCALE

S2.1A

A-2

DETAIL NO SCALE

S2.1A

A-3

DETAIL NO SCALE

S2.1A

A-4 DETAIL NO SCALE

S2.1A

A-5

R = 13.6 lb

R = 15.05 lb

R = 9.8 lb R = 16.35 lb

R = 15.0 lb

R = 13.0 lb

R = 14.2 lb

R = 12.0 lb

R = 12.3 lb

R = 9.2 lb

R = 15.85 lb

R = 18.9 lb

R = 18.7 lb

R = 26.1 lb

R = 28.2 lb

R = 20.75 lb

R = 12.35 lb

R = 11.9 lb

R = 28.0 lb

R = 35.7 lb

R = 23.55 lb

R = 10.1 lb

R = 11.8 lb

R = 15.45 lb

R = 26.25 lb

R = 28.25 lb

R = 19.0 lb

R = 20.6 lb

R = 20.3 lb

R = 7.45 lb

R = 14 lb

R = 21.15 lb

R = 23.95 lb

R = 25.2 lb

R = 19.85 lb

R = 14.7 lb

50 lbs total

110 lbs total

160 lbs total

280 lbs total 140 lbs total

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER HANGER

HANGER

HANGER

BRACING TO WF

COL PER

GUY WIRE BRACING

TO HSS BEAM

PER

S3.0

S3.0

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

HANGER

COMPRESSION

POST TO DRYWALL

PER

S3.0

HANGER

HANGERHANGER

HANGER

HANGER

600 Q STREET, SUITE 200

SACRAMENTO, CA 95811

916 443 0303

DRAWN BY:

DATE:

SHEET NUMBER:PROJECT NUMBER:

SHEET TITLE:

PROJECT NAME:

/2

/2

:1

:2

A

M C

U s e rs

\N ic k H

\D o c u m e n ts

\2

-0

S M

F H u b

A rt

P ro je c t_

R

C e n tr a l_ h e rs k e d a l.

rv t

Flight Path B

S2.1B Author

REVISIONS

NO. DESCRIPTION DATE

DETAIL NO SCALE

S2.1B

B-1 DETAIL NO SCALE

S2.1B

B-2

DETAIL NO SCALE

S2.1B

B-3 DETAIL NO SCALE

S2.1B

B-4

DETAIL NO SCALE

S2.1B

B-5

R = 37.55 lb

R = 35.9 lb

R = 36.05 lb

R = 33.9 lb

R = 19.95 lb

R = 26.15 lb

R = 26.1 lb

R = 19.9 lb

R = 19.9 lb

R = 17.4 lb

R = 38.05 lb

R = 45.9 lb

R = 40.05 lb

R = 17.4 lb

R = 31.65 lb

R = 39.35 lb R = 41.2 lb

R = 34.1 lb

R = 27.9 lb

R = 33.65 lb

R = 50.25 lb

R = 59.6 lb

R = 12.8 lb

R = 18.2 lb

R = 16 lb

R = 18.1 lb

R = 17.4 lb

R = 17.4 lb

175 lbs total 390 lbs total

160 lbs total 80 lbs total

130 lbs total

PROJECT

PROJECT NO.

SMF Art

NAH

Internal forces check:

There will be cantilevered portions of the flight path that could result in bending moment transferring through a sleeved connection at the flight path segments. For these forces to be transfered, a set of 1/4" machine bolts will be used at each sleeve to hold the segments together and to allow for some bending moment to be transfered through.

Moment demand:

Through review of each segment of path, it was determined that the maximum bending moment could occur at the end of each segment. The worst case shows a 8ft long segment that weights approximately 20 lbs. The diameter of the sleeve connection is approximately 4". Since all ends of the paths taper, the center of gravity of these segments is approximately 36" from the sleeve.

Mu = 20 lbs x 36 in = 720 lb-in

Moment capacity:

With (3) 1/4" bolts at 4" moment arm, machine bolts capacity are 200 lbs minimum.

Mall = 200 lbs x 4" = 800 lb-in

Internal connections are OK for sleeved connections at each flight path.

PROJECT

PROJECT NO.

SMF Art

NAH

1) Weights tributary to each hanger position.

2) Above ceiling structural designs.

3) Calculations of free movement.

4) Calculations for above ceiling bracing for each hanger point.

5) Calculations for sway restraints.

Max weight for a cable: 60 lbs Use 50% increase factor to account for non-uniform distribution and cantilevered affects from point to point.

Use 100 lbs per cable point load.

See the next page for Gripple connector strength and 1/8" dia wire strength checks.

Above ceiling structural design:

100 lbs point load to unistrut spanning 8'-0" max.

Per unistrut catalog:

Max Uniform load is 420 or 250 lbs at L/180.

Conversion for point load is 0.5 Max Uniform Load = 125 lbs.

Use P1000 Unistrut for gravity supports

B

A C

>Max kg/lbs

>60°

>60° >60°

Gripple Inc | 1611 Emily Lane | Aurora, IL 60502 | USA

Tel +1 866 474 7753 Fax +1 800 654 0689 Email grippleinc@gripple.com

Dimension No.1 (inches) No.2 (inches) No.3 (inches) No.4 (inches) No.5 (inches)

A 0.63 0.71 1.02 1.47 1.69

B 0.94 1.34 1.69 2.44 4.17

C 0.24 0.31 0.31 0.43 0.51

Standard Hanger (HF)

Ensure a minimum 3 inches of tail cable exits the hanger.

attached end fixing, and a Release Key

For more options on available end fixings please contact us or visit www.gripple.com

Gripple’s policy is one of continuous development and innovation.

We therefore reserve the right to alter specifications, etc. without notice.

PI-STDHANGER-US

INSTALLATION & ADJUSTMENT

SIZE SPECS

FEATURES / BENEFITS

www.gripple.com

Cable hanger with fastener for the fast suspension of a variety of services in an indoor stationary setting.

NOT suitable for use in chlorinated / swimming pool environments.

CABLE SPECS

AVAILABLE END FIXINGS

2.1. Adjust 1. Adjust 2. Adjust 3.3.

FASTENER SPECS

Safe Working Loads:

No.1 - up to 25 lbs No.2 - up to 100 lbs No.3 - up to 200 lbs No.4 - up to 495 lbs No.5 - up to 715 lbs

All with a 5:1 safety factor

Housing - Type ZA2 Zinc Wedge - Sintered steel hardened to min. 56 Rockwell C Spring - Stainless Steel (Type 302) End Cap - No.1-4: UV stabilized homopolymer propylene; No.5: Type ZA2 Zinc

No.1 No.2 No.3 No.4 No.5

Cable Diameter

1/16” 5/64” 1/8” 3/16” 1/4”

Strand Configuration

7x7 7x7 7x7 7x19 7x19

Min.

Breaking Load

125 lbs 500 lbs 1000 lbs 2475 lbs 3575 lbs

Max. Safe Working Load

25 lbs 100 lbs 200 lbs 495 lbs 715 lbs

Tensile Strength (lbs/sq.in.)

256,700 256,700 256,700 256,700 256,700

Galvanized high tensile steel cable to EN12385. Standard lengths from 5ft-30ft, other lengths can be made to order.

PROJECT

PROJECT NO.

SMF Art

NAH

1) Weights tributary to each hanger position.

2) Above ceiling structural designs.

3) Calculations of free movement.

4) Calculations for above ceiling bracing for each hanger point.

5) Calculations for sway restraints.

Free movement of the art pieces was determined by using the principals of pendulum dynamics as well as potential and kinetic energy.

From the ETABS analysis of the SMF Hub Structure, the maximum velocity of the roof structure as determined by response spectrum analysis equals:

15.36 in/sec = 0.873 mile/hour

By using the max velocity of the structure as the max velocity of the pendulum, a calculation can be made to find the kinetic energy of the art swinging at its fastest. The kinetic energy must be equal to the potential energy of the pendulum that swings upward as it slows down. By using this calculation, the period, angle of movement, and horizontal displacement can be determined.

KE = 1/2 m v^2 PE = mgh

KE = PE

L = height of pendulum

Solving for h = 1/2v^2 / g Angle from vertical to max motion = cos-1(1-h/L) Movement = sin(theta)*L

A summary of these calculations is shown to the right.

The max estimated displacement is 16" for the longest hanging art piece.

Length T Theta Disp

12 1.1 13.0 2.7

24 1.6 9.1 3.8

36 1.9 7.5 4.7

48 2.2 6.5 5.4

60 2.5 5.8 6.0

72 2.7 5.3 6.6

84 2.9 4.9 7.2

96 3.1 4.6 7.7

108 3.3 4.3 8.1

120 3.5 4.1 8.6

132 3.7 3.9 9.0

144 3.8 3.7 9.4

156 4.0 3.6 9.8

168 4.1 3.5 10.1

180 4.3 3.3 10.5

192 4.4 3.2 10.8

204 4.6 3.1 11.2

216 4.7 3.0 11.5

228 4.8 3.0 11.8

240 5.0 2.9 12.1

252 5.1 2.8 12.4

264 5.2 2.8 12.7

276 5.3 2.7 13.0

288 5.4 2.6 13.3

300 5.5 2.6 13.5

312 5.6 2.5 13.8

324 5.8 2.5 14.1

336 5.9 2.4 14.3

348 6.0 2.4 14.6

360 6.1 2.4 14.8

372 6.2 2.3 15.1

384 6.3 2.3 15.3

396 6.4 2.2 15.5

408 6.5 2.2 15.8

420 6.6 2.2 16.0

PROJECT

PROJECT NO.

SMF Art

NAH

1) Weights tributary to each hanger position.

2) Above ceiling structural designs.

3) Calculations of free movement.

4) Calculations for above ceiling bracing for each hanger point.

5) Calculations for sway restraints.

Use 100 lbs per cable point load.

Use 380 lbs max per art piece.

For bracing above ceiling:

Fp = 0.4Sds(Ap/Rp)IpWp(1+2(z/h)) Fp = 0.4(0.54)(2.5/2.5)(1.0)(Wp)(3) = .65Wp Fp for total piece = 250 lbs Fp for max individual cable = 85 lbs

85 lbs m ax m ax

340 lbs

425 lbs

96" max

100 lbs

100 lbs max 100 lbs max

Max moment per unistrut P1000 table: Mu = 5080 in-lbs (ASD) Max moment per unistrut P1001 table: Mu = Mu max in vertical due to seismic load = 2856 lb-in (ASD) Mu max in horizontal due to seismic load = 7140 lb-in (ASD)

Note: loads shown here in LRFD

PROJECT

PROJECT NO.

SMF Art

NAH

1) Weights tributary to each hanger position.

2) Above ceiling structural designs.

3) Calculations of free movement.

4) Calculations for above ceiling bracing for each hanger point.

5) Calculations for sway restraints.

Use 100 lbs per cable point load.

Use 380 lbs max per art piece.

For bracing above ceiling:

Fp = 0.4Sds(Ap/Rp)IpWp(1+2(z/h)) Fp = 0.4(0.54)(2.5/2.5)(1.0)(Wp)(3) = .65Wp Fp for total piece = 250 lbs Fp for max individual cable = 85 lbs

85 lbs m ax m ax

340 lbs

425 lbs

96" max

100 lbs

100 lbs max 100 lbs max

Max moment per unistrut P1000 table: Mu = 5080 in-lbs (ASD) Max moment per unistrut P1001 table: Mu = Mu max in vertical due to seismic load = 2856 lb-in (ASD) Mu max in horizontal due to seismic load = 7140 lb-in (ASD)

Note: loads shown here in LRFD

PROJECT

PROJECT NO.

SMF Art

NAH

1) Weights tributary to each hanger position.

2) Above ceiling structural designs.

3) Calculations of free movement.

4) Calculations for above ceiling bracing for each hanger point.

5) Calculations for sway restraints.

Use 380 lbs max per art piece.

For Bracing at art pieces below the ceiling:

Fp = 0.4Sds(Ap/Rp)IpWp(1+2(z/h)) Fp = 0.4(0.54)(2.5/2.5)(1.0)(Wp)(3) = .65Wp Fp for total piece = 250 lbs

Use 150 lbs for each connection point as a conservative estimate on load.

Threaded rods:

5/8" rod A36 grade can support compression loads of 200 lbs at KL/r = 200. Limit the length to KL/r = 200. With r = D/4, max L = 24".

Bending connections on rods:

Bending is not required to be resisted on these rods. Connections are being limited to compression/tension only. However, the rod could resist 150 lbs of bending up to 10" away from plate.

With 150 lbs at 9" max from support and double , Mu = 150 x 9" = 1350 lb-in. An A36 5/8" threaded rod has a phiMn = 0.9(36)(.5^3/6) = 1318 lb-in. Say OK for rod extending 9" max.

With bending at 1350 lb-in, connections shall be strong enough to resist this load.

Welded connections are OK by inspection.

For SMS to metal studs: Mu = 945 lb-in (ASD)

Use (4) #12 SMS through one layer of gyp board to 16ga backing. Screws are 2.5" away from each other on a 4" square plate.

Mall = 205 lbs x 2.5" x 2 screws = 1025 lb-in.

Screw Connection is OK

One additional connection type is to be made to aluminum curtain wall. This is meant as a push-pull connection only with slotted holes to allow for some slight rotation. As such, (3) #12 SMS to aluminum is acceptable using the Dewalt screws in ESR-4374 for connecting to aluminum.

ASCE Hazards Report Address:

No Address at This Location

Standard: ASCE/SEI 7-16 Latitude: 38.69445

Risk Category: II Longitude: -121.593043

Soil Class: D - Default (see Section 11.4.3)

Elevation: 25.05352727480996 ft

(NAVD 88)

Page 1 of 3https://ascehazardtool.org/ Wed May 21 2025

SS : 0.62

S1 : 0.266

Fa : 1.304

Fv : N/A

SMS : 0.809

SM1 : N/A

SDS : 0.539

SD1 : N/A

TL : 12

PGA : 0.261

PGA M : 0.349

FPGA : 1.339

Ie : 1

Cv : 1.11

Seismic

Site Soil Class:

Results:

Data Accessed:

Date Source:

D - Default (see Section 11.4.3)

USGS Seismic Design Maps

Ground motion hazard analysis may be required. See ASCE/SEI 7-16 Section 11.4.8.

Wed May 21 2025

ST1.07

SHEET METAL SCREW ALLOWABLE

STRENGTHS

STANDARD PARTITION WALL DETAILS

M. R. Karim

OPD-0001-13

05/11/2017

05/11/2017 OPD-0001-13: Reviewed for Code Compliance by Karim Page 24 of 86

ST1.08

SHEET METAL SCREW ALLOWABLE

STRENGTHS (CONTINUED)

STANDARD PARTITION WALL DETAILS

M. R. Karim

OPD-0001-13

05/11/2017

05/11/2017 OPD-0001-13: Reviewed for Code Compliance by Karim Page 25 of 86

DIVISION: 05 00 00—

METALS

Section: 05 05 23— Metal Fastenings

REPORT HOLDER:

DEWALT

ADDITIONAL LISTEE:

HILTI, INC

EVALUATION SUBJECT:

BI-FLEX®, DRIL-FLEX®

AND ALUMI-FLEX®

SELF-DRILLING

STRUCTURAL SCREWS

USED WITH ALUMINUM

(DEWALT)

1.0 EVALUATION SCOPE

Compliance with the following codes:

2024, 2021, 2018 and 2015 International Building Code® (IBC) 2024, 2021, 2018 and 2015 International Residential Code (IRC) Section number references in this report are for the 2024 IBC and IRC and the standards referenced therein. Corresponding section numbers for earlier code editions are shown in Table 9 at the end of this report.

Property evaluated:

Structural

2.0 USES

The screws described in this report are used in engineered aluminum-to-aluminum and aluminum-to-steel connections, and to attach miscellaneous building materials to aluminum. The screws may be used in structures regulated under the IRC when an engineered design is submitted in accordance with IRC Section R301.1.3.

3.0 DESCRIPTION

3.1 General:

The evaluated screws are self-drilling, self-tapping screws with various head styles. See Table 1 for detailed product descriptions including screw size, nominal diameter, head style, head diameter, point number, drilling capacities in aluminum and steel, as applicable, and minimum required protrusion length. See Figure 1 for depictions of the screws. Product names for the report holder and the additional listee are presented in the following table:

Company Name Product Name DEWALT Dril-Flex® Bi-Flex® Alumi-Flex®

Hilti Kwik-Flex Bi-Metal Kwik-Flex –

3.1.1 Bi-Flex® Screws: The Bi-Flex® screws have a head and shank which are formed from 300 series stainless steel and a drill point and tapping threads which are formed from carbon steel which is hardened.

ICC-ES Evaluation Report

ESR-4374

Reissued March 2025 This report also contains:

- City of LA Supplement

- FL Supplement w/HVHZ Subject to renewal March 2026

ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, LLC, express or implied, as to any finding or other matter in this report, or as to any product covered by the report.

Copyright © 2025 ICC Evaluation Service, LLC. All rights reserved.

ESR-4374 Page 2 of 12

The carbon steel and stainless steel parts are fused together, prior to being coated with a proprietary corrosion-resistant coating identified as Stalgard® GB, which is silver in color.

3.1.2 Dril-Flex® Screws: The Dril-Flex® screws are manufactured from alloy steel wire complying with the manufacturer’s specifications. The drill point and lead threads of the screws are heat-treated to a relatively high hardness to facilitate drilling and thread forming. The balance of the screw is treated to a lower hardness complying with the hardness limits for SAE J429 Grade 5 screws and the hardness limits for ASTM A449 Type 1 screws. Hex washer head parts are coated with a corrosion-resistant coating identified as Stalgard® SUB, which is silver in color. All other head styles are coated with a corrosion-resistant coating identified as Stalgard®, which is silver in color.

3.1.3 Alumi-Flex® Screws: The Alumi-Flex® screws are manufactured from 300 series stainless steel. The screws also have a corrosion resistant coating designated as Stalgard® GB.

3.2 Connected Materials:

3.2.1 Aluminum: The design values in this report apply to screw connections of flat pieces of 6063-T5, 6061- T6 or 6063-T6 aluminum. The minimum yield and tensile strengths of these materials are shown in the tables in this report and correspond to ASTM standards shown in Table A.4.3 of the Aluminum Design Manual (ADM).

The aluminum thicknesses must be as indicated in the applicable tables.

3.2.2 Steel: The applicable minimum yield and tensile strengths of steel materials are shown in the tables in this report. The steel thickness must be as indicated in the applicable tables.

4.0 DESIGN AND INSTALLATION

4.1 Design:

4.1.1 General: The screws described in this report have been evaluated for use in engineered connections.

Determination of the suitability of a particular screw described in this report for the specific application is the responsibility of the registered design professional and is outside the scope of this report. The registered design professional is also responsible for determining the applicable limit states for the connection that must be considered. Design provisions are based on the ADM and AISI S100, as applicable.

Screw length must equal or exceed the sum of the thickness of the fastened materials, including interstitial material, when applicable, and the minimum required protrusion length shown in Table 1.

4.1.2 Available Strengths: Available strengths for the evaluated screws are tabulated as follows:

LIMIT STATE TABLE PAGE

Fastener Strength 2 5

Aluminum Pull-over Strength ASD 3A 6 LRFD 3B

Aluminum Pull-out Strength ASD 4A 7 LRFD 4B

Aluminum-to-Aluminum Shear Strength ASD 5A

8 LRFD 5B

Steel Pull-out Strength ASD 6A 9 LRFD 6B

Aluminum-to-Steel Shear Strength ASD 7A 10 LRFD 7B For aluminum-to-aluminum connections, shear (bearing) strengths are applicable to connections where the two connected pieces of aluminum are in direct contact with one another. For aluminum-to-steel connections, shear (bearing) strengths are applicable to connections where the spacing between the aluminum and steel pieces does not exceed the thickness of the spacer used in testing, which is addressed in Tables 7A and 7B.

Design provisions for self-drilling tapping screw connections subjected to combined shear and tension loading are outside the scope of the report.

4.1.3 Rupture: Connected members must be checked for rupture in accordance with Section J6 of AISI S100 and/or Section J.7.3 of the ADM, as applicable.

4.1.4 Geometric Parameters: The minimum edge and end distances for the screws must be 1.5 times the nominal diameter of the screw, in accordance with Section J.5.3 of the ADM and Section J4.2 of AISI S100.

For screws installed into aluminum, screw spacing must be a minimum of 2.5 times the nominal diameter of the screw, in accordance with Section J.5.2 of the ADM. For screws installed into steel, the minimum spacing must be 3 times the nominal diameter of the screw. The maximum spacing of screws in aluminum must comply

ESR-4374 Page 3 of 12 with Section J.1.3 of the ADM. See Table 8 for required spacing, edge and distance dimensions based on these requirements.

4.1.5 Corrosion Resistance: Screws formed partially or entirely from carbon steel have been tested for corrosion resistance in accordance with ASTM B117, and exhibit no white corrosion after three hours and no red rust after twelve hours. Resistance to corrosion due to environmental conditions and/or galvanic action between aluminum and steel base material and/or fastener material is outside the scope of this evaluation.

The registered design professional is responsible for determining the required corrosion resistance.

4.2 Installation:

Installation of screws must be in accordance with the published installation instructions from the report holder or listee and this report. The published installation instructions must be available at the jobsite at all times during installation.

The screws must be installed perpendicular to the work surface using a screw gun incorporating a depth-sensitive or torque-limiting nose piece with a maximum speed of 1800 rpm for all 1/4-inch screws and for #12 screws with a #4 or #5 point type; and a maximum speed of 2500 rpm for all other screws.

5.0 CONDITIONS OF USE:

The screws described in this report comply with, or are suitable alternatives to what is specified in, those codes listed in Section 1.0 of this report, subject to the following conditions:

5.1 The screws must be installed in accordance with this report and the applicable published installation instructions. In the case of a conflict between the published installation instructions and this report, the more restrictive requirements govern.

5.2 Design loads for the screws must not exceed the available strengths described in Section 4.1.

5.3 Construction documents and calculations demonstrating that the design loads do not exceed the available strengths must be submitted to the code official. The calculations must be prepared by a registered design professional when required by statutes of the jurisdiction in which the project is to be constructed.

5.4 The screws are manufactured under a quality control program with inspections by ICC-ES.

6.0 EVIDENCE SUBMITTED

Data in accordance with the ICC-ES Acceptance Criteria for Self-drilling Tapping Screws Used with Aluminum (AC491) dated June 2017 (editorially revised February 2024).

7.0 IDENTIFICATION

7.1 The ICC-ES mark of conformity, electronic labeling, or the evaluation report number (ICC-ES ESR-4374) along with the name, registered trademark, or registered logo of the report holder and/or listee must be included in the product label.

7.2 In addition, the screw heads are marked as shown in Figure 1. Packages of the screws are labeled with the product name, the fastener size, length, and point number, and the coating.

7.3 The report holder’s contact information is the following:

DEWALT

701 EAST JOPPA ROAD

TOWSON, MARYLAND 21286

(800) 524-3244 www.DEWALT.com anchors@DEWALT.com

7.4 The Additional Listee’s contact information is the following:

HILTI, INC.

7250 DALLAS PARKWAY, SUITE 1000

PLANO, TEXAS 75024

(800) 879-8000 www.us.hilti.com

ESR-4374 Page 4 of 12

TABLE 1—SCREW DESCRIPTIONS1

SCREW

TYPE

DESCRIPTION

(nominal size and tpi)

NOMINAL

DIAMETER

(inch)

HEAD

STYLE2

DRIVE SIZE

(inch) /

PHILLIPS

SIZE (No.)

NOMINAL

HEAD

DIAMETER

(inch)

POINT

TYPE

MAXIMUM DRILLING CAPACITY

(inch)

MINIMUM

REQUIRED

PROTRUSION

LENGTH

(inch) In Aluminum In Steel

Bi-Flex® Screws

1 #8-18 0.164 HWH 1/4 0.335 #2 0.125 0.110 0.594

2 #8-18 0.164 PPH 2 0.315 #2 0.125 0.110 0.594

3 #10-16 0.190 HWH 5/16 0.400 #2 0.125 0.110 0.500

4 #10-16 0.190 Pancake 2 0.435 #2 0.125 0.110 0.500

5 #10-16 0.190 PPH 2 0.365 #2 0.125 0.110 0.500

6 #12-14 0.216 HWH 5/16 0.415 #2 0.125 0.110 0.594

7 #12-14 0.216 PUFH 3 0.415 #2 0.125 0.110 0.594

8 #12-14 0.216 HWH 5/16 0.415 #3 0.250 0.230 0.594

9 #12-14 0.216 Pancake 2 0.435 #3 0.250 0.230 0.594

10 #12-24 0.216 HWH 5/16 0.415 #5 0.500 0.500 1.000

11 1/4-14 0.250 HWH 3/8 0.500 #2 0.125 0.110 0.594

12(3) 1/4-20 0.250 PUFH 3 0.480 #3 0.250 0.230 0.594

13 1/4-20 0.250 HWH 3/8 0.500 #3 0.250 0.230 0.594

14(3) 1/4-20 0.250 HWH 3/8 0.500 #3 0.250 0.230 0.594

15 1/4-20 0.250 HWH 3/8 0.500 #5 0.500 0.500 1.000

16(3) 1/4-20 0.250 HWH 3/8 0.500 #5 0.500 0.500 1.000

Dril-Flex® Screws

17 #10-16 0.190 PPH 2 0.365 #2 0.125 0.110 0.406

18A #10-16 0.190 HWH 5/16 0.400 #3 0.175 0.150 0.500

18B #10-16 0.190 HWH 5/16 0.415 #3 0.175 0.150 0.500

19 #10-24 0.190 PWH 2 0.470 #3 0.175 0.150 0.468

20 #12-14 0.216 HWH 5/16 0.500 #2 0.125 0.110 0.625

21 #12-14 0.216 HWH 5/16 0.415 #3 0.210 0.188 0.500

22 #12-14 0.216 PUFH 3 0.415 #3 0.210 0.188 0.500

23 #12-24 0.216 HWH 5/16 0.415 #5 0.500 0.500 1.000

24 1/4-14 0.250 HWH 3/8 0.500 #3 0.210 0.210 0.563

25 1/4-20 0.250 HWH 3/8 0.500 #4 0.313 0.313 0.813

26(3) 1/4-20 0.250 HWH 3/8 0.500 #4 0.313 0.313 0.813

27(3) 1/4-20 0.250 PUFH 3 0.460 #4 0.313 0.313 0.813

28 1/4-20 0.250 HWH 3/8 0.500 #5 0.500 0.500 1.000

Alumi-Flex® Screws

29 #10-16 0.190 HWH 5/16 0.400 #3 0.175 – 0.438

30 #10-16 0.190 PUFH 2 0.350 #3 0.175 – 0.438

31 #12-14 0.216 HWH 5/16 0.415 #3 0.210 – 0.500

32 1/4-14 0.250 HWH 3/8 0.500 #3 0.250 – 0.563

33 1/4-14 0.250 PUFH 3 0.480 #3 0.250 – 0.563

34 1/4-20 0.250 HWH 5/16 0.500 #4 0.313 – 0.625

For SI: 1 inch = 25.4 mm.

1Screws are fully threaded unless noted otherwise.

2Head style abbreviations denote the following: HWH = Hex Washer Head, PPH = Phillips Pan Head, PUFH = Phillips Undercut Flat Head, PWH = Phillips Wafer Head and Pancake = Phillips Pancake Head.

3This screw is partially threaded.

Hex Washer Head (HWH) Phillips Pan Head (PPH) Phillips Undercut Flat Head (PUFH) Phillips Wafer Head (PWH)

Phillips Pancake Head

Bi-Flex® Dril-Flex® Alumi-Flex® Bi-Flex® Dril-Flex® Bi-Flex® Dril-Flex® Alumi-Flex® Dril-Flex® Bi-Flex®

FIGURE 1—SCREW SHAPES AND HEAD MARKINGS

ESR-4374 Page 5 of 12

TABLE 2—FASTENER SHEAR AND TENSION STRENGTHS1,2,3

TYPE

SCREW

SIZE

NOMINAL

DIAMETER

(inch)

HEAD

STYLE4

NOMINAL STRENGTH (lbf) ALLOWABLE STRENGTH (ASD)

Ω=3 (lbf)

DESIGN STRENGTH (LRFD)

Φ=0.5 (lbf) Shear, Pss Tension, Pts Shear, Pss/Ω Tension, Pts/Ω Shear, ΦPss Tension, ΦPts

Bi-Flex® Screws

1 #8-18 0.164 HWH 1,195 1,508 398 503 598 754

2 #8-18 0.164 PPH 1,066 1,437 355 479 533 719

3 #10-16 0.190 HWH 1,506 2,038 502 679 753 1,019

4 #10-16 0.190 Pancake 1,251 1,713 417 571 626 857

5 #10-16 0.190 PPH 1,274 1,758 425 586 637 879

6 #12-14 0.216 HWH 2,084 2,850 695 950 1,042 1,425

7 #12-14 0.216 PUFH 1,616 2,409 539 803 808 1,205

8 #12-14 0.216 HWH 2,148 2,788 716 929 1,074 1,394

9 #12-14 0.216 Pancake 1,668 2,331 556 777 834 1,166

10 #12-24 0.216 HWH 2,147 2,939 716 980 1,074 1,470

11 1/4-14 0.250 HWH 2,601 3,582 867 1,194 1,301 1,791

12 1/4-20 0.250 PUFH 2,356 3,042 785 1,014 1,178 1,521

13, 14 1/4-20 0.250 HWH 3,043 4,006 1,014 1,335 1,522 2,003

15 16 1/4-20 0.250 HWH 3,289 3,834 1,096 1,278 1,645 1,917

Dril-Flex® Screws

17, #10-16 0.190 PPH 1,526 2,273 509 758 763 1,136

18A, 18B #10-16 0.190 HWH 1,463 2,276 488 759 732 1,138

19 #10-24 0.190 PWH 1,080 2,613 360 871 540 1,307

20, 21 #12-14 0.216 HWH 1,992 3,216 664 1,072 996 1,608

22 #12-14 0.216 PUFH 1,980 2,149 660 716 990 1,075

23 #12-24 0.216 HWH 1,933 3,254 644 1,085 967 1,627

24 1/4-14 0.250 HWH 2,692 4,363 897 1,454 1,346 2,182

25, 28 1/4-20 0.250 HWH 2,617 4,359 872 1,453 1,308 2,179

26 1/4-20 0.250 HWH 2,659 4,729 886 1,576 1,330 2,364

27 1/4-20 0.250 PUFH 2,865 4,592 955 1,531 1,433 2,296

Alumi-Flex® Screws

29 #10-16 0.190 HWH 1,169 1,525 390 508 585 762

30 #10-16 0.190 PUFH 1,140 1,728 380 576 570 864

31 #12-14 0.216 HWH 1,544 2,110 515 703 772 1,055

32 1/4-14 0.250 HWH 2,054 2,966 685 989 1,027 1,483

33 1/4-14 0.250 PUFH 2,062 3,202 687 1,067 1,031 1,601

34 1/4-20 0.250 HWH 2,177 3,404 726 1,135 1,089 1,702

For SI: 1 inch = 25.4 mm, 1 lbf = 4.45 N.

1Strengths are based on laboratory tests.

2For tension connections, the lowest of the available pull-out, pull-over, and screw tension strength must be used for design.

3For shear connections, the lower of the available screw shear strength and the available shear (bearing) must be used for design.

4Head style abbreviations denote the following: HWH = Hex Washer Head, PPH = Phillips Pan Head, PUFH = Phillips Undercut Flat Head, PWH = Phillips Wafer Head, and Pancake = Phillips Pancake Head.

ESR-4374 Page 6 of 12

TABLE 3A—ALLOWABLE (ASD) PULL-OVER STRENGTH OF ALUMINUM IN SCREW CONNECTIONS (lbf)1,2,3,4

TYPE

SCREW

SIZE

NOMINAL

DIAMETER

(in.)

HEAD

STYLE5

THICKNESS OF ALUMINUM MEMBER IN CONTACT WITH SCREW HEAD (inch) 6063-T5

(Fy = 16 ksi, Fu = 22 ksi) 6063-T6

(Fy = 25 ksi, Fu = 30 ksi) 6061-T6

(Fy = 35 ksi, Fu = 38 ksi) 1/32 1/16 1/8 3/16 1/32 1/16 1/8 3/16 1/32 1/16 1/8 3/16

Bi-Flex® Screws

1 #8-18 0.164 HWH 36 72 145 217 49 99 198 296 63 125 250 375

2 #8-18 0.164 PPH 31 63 126 188 43 86 171 257 54 108 217 325

3 #10-16 0.190 HWH 45 168 408 718 62 263 637 1,121 78 368 892 1,570

4 #10-16 0.190 Pancake 54 181 433 756 74 283 677 1,181 93 396 947 1,653

5 #10-16 0.190 PPH 38 75 150 226 51 103 205 308 65 130 260 390

6, 8 #12-14 0.216 HWH 43 174 555 734 58 271 659 1,146 74 380 915 1,605

7 #12-14 0.216 PUFH – 280 595 – – 437 706 – – 463 706 –

9 #12-14 0.216 Pancake 48 181 433 756 65 283 677 1,181 83 396 947 1,653

10 #12-24 0.216 HWH 43 174 555 734 58 271 659 1,146 74 380 915 1,605

11 1/4-14 0.250 HWH 54 202 595 819 73 316 742 1,279 93 442 1,039 1,791

13, 15 1/4-20 0.250 HWH 54 202 595 967 73 316 742 1,279 93 442 1,039 1,791

Dril-Flex® Screws

17 #10-16 0.190 PPH 38 75 150 226 51 103 205 308 65 130 260 390

18A, 18B #10-16 0.190 HWH 45 168 408 718 62 263 637 1,121 78 368 892 1,570

19 #10-24 0.190 PWH – 277 510 – – 432 605 – – 458 605 –

20 #12-14 0.216 HWH 62 202 534 819 85 316 742 1,279 108 442 1,039 1,791

21 #12-14 0.216 HWH 43 174 534 734 58 271 654 1,146 74 380 915 1,605

22 #12-14 0.216 PUFH – 249 515 515 – 390 612 612 – 413 612 612

23 #12-24 0.216 HWH 43 174 534 734 58 271 654 1,146 74 380 915 1,605

24 1/4-14 0.250 HWH 54 202 738 819 73 316 876 1,279 93 442 1,039 1,791

25, 28 1/4-20 0.250 HWH 54 202 738 988 73 316 876 1,279 93 442 1,039 1,791

Alumi-Flex® Screws

29 #10-16 0.190 HWH 45 168 408 718 62 263 637 1,121 78 368 892 1,570

30 #10-16 0.190 PUFH – 200 456 – – 313 542 – – 332 542 –

31 #12-14 0.216 HWH 43 174 418 734 58 271 654 1,146 74 380 915 1,605

32 1/4-14 0.250 HWH 54 202 673 819 73 316 799 1,279 93 442 1,039 1,791

33 1/4-14 0.250 PUFH – 245 534 534 – 383 635 635 – 406 635 635

34 1/4-20 0.250 HWH 54 202 673 868 73 316 799 1,279 93 442 1,039 1,791

For SI: 1 inch = 25.4 mm, 1 lbf = 4.45 N. See notes below Table 3B.

TABLE 3B—DESIGN (LRFD) PULL-OVER STRENGTH OF ALUMINUM IN SCREW CONNECTIONS (lbf)1,2,3,4

TYPE

SCREW

SIZE

NOMINAL

DIAMETER

(in.)

HEAD

STYLE5

THICKNESS OF ALUMINUM MEMBER IN CONTACT WITH SCREW HEAD (inch) 6063-T5

(Fy = 16 ksi, Fu = 22 ksi) 6063-T6

(Fy = 25 ksi, Fu = 30 ksi) 6061-T6

(Fy = 35 ksi, Fu = 38 ksi) 1/32 1/16 1/8 3/16 1/32 1/16 1/8 3/16 1/32 1/16 1/8 3/16

Bi-Flex® Screws

1 #8-18 0.164 HWH 54 109 217 326 74 148 296 444 94 188 375 563

2 #8-18 0.164 PPH 47 94 188 283 64 128 257 385 81 163 325 488

3 #10-16 0.190 HWH 68 253 612 1,077 93 395 955 1,682 118 553 1,338 2,355

4 #10-16 0.190 Pancake 81 272 650 1,134 111 424 1,015 1,771 140 594 1,421 2,480

5 #10-16 0.190 PPH 56 113 226 338 77 154 308 461 97 195 390 584

6,8 #12-14 0.216 HWH 64 261 832 1,101 88 407 988 1,720 111 570 1,373 2,408

7 #12-14 0.216 PUFH – 420 892 – – 656 1,059 – – 656 1,059 –

9 #12-14 0.216 Pancake 72 272 650 1,134 98 424 1,015 1,771 124 594 1,421 2,480

10 #12-24 0.216 HWH 64 261 832 1,101 88 407 988 1,720 111 570 1,373 2,408

11 1/4-14 0.250 HWH 80 303 893 1,228 110 474 1,113 1,919 139 663 1,559 2,687

13, 15 1/4-20 0.250 HWH 80 303 893 1,451 110 474 1,113 1,919 139 663 1,559 2,687

Dril-Flex® Screws

17 #10-16 0.190 PPH 56 113 226 338 77 154 308 461 97 195 390 584

18A, 18B #10-16 0.190 HWH 68 253 612 1,077 93 395 955 1,682 118 553 1,338 2,355

19 #10-24 0.190 PWH – 415 765 – – 649 908 – – 688 908 –

20 #12-14 0.216 HWH 94 303 801 1,228 128 474 1,113 1,919 162 663 1,559 2,687

21 #12-14 0.216 HWH 64 261 801 1,101 88 407 980 1,720 111 570 1,373 2,408

22 #12-14 0.216 PUFH – 374 773 773 – 585 918 918 – 620 918 918

23 #12-24 0.216 HWH 64 261 801 1,101 88 407 980 1,720 111 570 1,373 2,408

24 1/4-14 0.250 HWH 80 303 1,107 1,228 110 474 1,314 1,919 139 663 1,559 2,687

25, 28 1/4-20 0.250 HWH 80 303 1,107 1,482 110 474 1,314 1,919 139 663 1,559 2,687 Alumi-Flex® Screws

29 #10-16 0.190 HWH 68 253 612 1,077 93 395 955 1,682 118 553 1,338 2,355

30 #10-16 0.190 PUFH – 300 685 – – 469 813 – – 497 813 –

31 #12-14 0.216 HWH 64 261 628 1,101 88 407 980 1,720 111 570 1,373 2,408

32 1/4-14 0.250 HWH 80 303 1,009 1,228 110 474 1,199 1,919 139 663 1,559 2,687

33 1/4-14 0.250 PUFH – 368 802 802 – 575 952 952 – 610 952 952

34 1/4-20 0.250 HWH 80 303 1,009 1,302 110 474 1,199 1,919 139 663 1,559 2,687

For SI: 1 inch = 25.4 mm, 1 lbf = 4.45 N.

1Available strengths in shaded cells are based on laboratory tests, which exceed available strengths calculated in accordance with the ADM. Safety factors and resistance factors have been determined in accordance with the ADM. These values only apply to screws which are self-drilled.

2Available strengths in unshaded cells are based on calculations in accordance with the ADM. These values are applicable to screws which are self-drilled and to screws which are installed in existing holes in the aluminum which have the following dimensions: 0.177 inch for #8 screws; 0.201 inch for #10 screws; 0.228 inch for #12 screws;

0.266 inch for 1/4-inch screws.

3Available strengths for member thicknesses which are not addressed in the table may be determined by calculation in accordance with the ADM.

4For tension connections, the lowest of the available pull-out, pull-over, and screw tension strength must be used for design.

5Head style abbreviations denote the following: HWH = Hex Washer Head, PPH = Phillips Pan Head, PUFH = Phillips Undercut Flat Head, PWH = Phillips Wafer Head, and Pancake = Phillips Pancake Head.

ESR-4374 Page 7 of 12

TABLE 4A—ALLOWABLE (ASD) PULL-OUT STRENGTH OF SCREWS INSTALLED IN ALUMINUM (lbf)1,2

TYPE

SCREW

SIZE

NOMINAL

DIAMETER

(in.)

POINT

TYPE

THICKNESS OF ALUMINUM MEMBER NOT IN CONTACT WITH SCREW HEAD (inch) 6063-T5

(Fy = 16 ksi, Fu = 22 ksi) 6063-T6

(Fy = 25 ksi, Fu = 30 ksi) 6061-T6

(Fy = 35 ksi, Fu = 38 ksi) 1/16 1/8 3/16 1/4 5/16 1/16 1/8 3/16 1/4 5/16 1/16 1/8 3/16 1/4 5/16

Bi-Flex® Screws 1, 2 #8-18 0.164 #2 69 175 – – – 101 252 – – – 123 320 – – –

3, 4, 5 #10-16 0.190 #2 72 190 – – – 100 280 – – – 128 360 – – – 6, 7 #12-14 0.216 #2 70 206 – – – 106 308 – – – 134 406 – – – 8, 9 #12-14 0.216 #3 55 164 353 504 – 85 270 496 646 – 110 348 590 696 – 10 #12-24 0.216 #5 – 145 309 387 436 – 214 421 518 606 – 275 467 595 704 11 1/4-14 0.250 #2 84 237 – – – 133 357 – – – 180 473 – – –

12, 13, 14 1/4-20 0.250 #3 60 171 330 488 – 95 257 477 656 – 122 342 594 758 – 15, 16 1/4-20 0.250 #5 – 120 259 355 395 – 190 340 508 565 – 273 357 660 706

Dril-Flex® Screws 17 #10-16 0.190 #2 78 200 – – – 119 298 – – – 153 391 – – –

18A, 18B #10-16 0.190 #3 76 180 – – – 100 277 – – – 132 381 – – – 19 #10-24 0.190 #3 82 193 – – – 100 283 – – – 109 361 – – – 20 #12-14 0.216 #2 103 226 – – – 114 329 – – – 146 415 – – –

21, 22 #12-14 0.216 #3 103 216 420 – – 114 317 592 – – 145 403 704 – – 23 #12-24 0.216 #5 – 183 358 410 449 – 262 487 664 664 – 322 542 812 812 24 1/4-14 0.250 #3 85 241 437 – – 123 346 644 – – 144 428 832 – –

25, 26, 27 1/4-20 0.250 #4 – 233 447 589 641 – 336 617 847 977 – 416 708 1,113 1,195 28 1/4-20 0.250 #5 – 224 437 596 600 – 333 621 842 882 – 434 752 1,075 1,134

Alumi-Flex® Screws 29, 30 #10-16 0.190 #3 71 190 – – – 109 286 – – – 143 379 – – –

31 #12-14 0.216 #3 66 189 391 – – 114 286 556 – – 132 382 556 – – 32, 33 1/4-14 0.250 #3 72 199 422 826 – 107 313 589 826 – 130 401 688 826 –

34 1/4-20 0.250 #4 – 195 376 580 580 – 291 547 782 782 – 382 719 880 880 For SI: 1 inch = 25.4 mm, 1 lbf = 4.45 N.

1Allowable strengths are based on laboratory tests. Safety factors have been determined in accordance with the ADM. These values only apply to screws which are self-drilled.

2For tension connections, the lowest of the allowable pull-out, pull-over, and screw tension strength must be used for design.

TABLE 4B—DESIGN (LRFD) PULL-OUT STRENGTH OF SCREWS INSTALLED IN ALUMINUM (lbf)1,2

TYPE

SCREW

SIZE

NOMINAL

DIAMETER

(in.)

POINT

TYPE

THICKNESS OF ALUMINUM MEMBER NOT IN CONTACT WITH SCREW HEAD (inch) 6063-T5

(Fy = 16 ksi, Fu = 22 ksi) 6063-T6

(Fy = 25 ksi, Fu = 30 ksi) 6061-T6

(Fy = 35 ksi, Fu = 38 ksi) 1/16 1/8 3/16 1/4 5/16 1/16 1/8 3/16 1/4 5/16 1/16 1/8 3/16 1/4 5/16

Bi-Flex® Screws 1, 2 #8-18 0.164 #2 103 262 – – – 152 377 – – – 185 480 – – –

3, 4, 5 #10-16 0.190 #2 109 285 – – – 150 420 – – – 193 541 – – – 6, 7 #12-14 0.216 #2 105 309 – – – 159 462 – – – 201 610 – – – 8, 9 #12-14 0.216 #3 82 246 529 756 – 127 405 744 968 – 166 523 885 1,044 – 10 #12-24 0.216 #5 – 218 464 581 655 – 321 631 778 909 – 413 701 892 1,056 11 1/4-14 0.250 #2 127 356 – – – 200 535 – – – 270 710 – – –

12, 13, 14 1/4-20 0.250 #3 91 257 496 733 – 143 386 715 984 – 184 513 892 1,137 – 15, 16 1/4-20 0.250 #5 – 180 389 532 592 – 286 510 762 848 – 410 536 990 1,059

Dril-Flex® Screws 17 #10-16 0.190 #2 118 300 – – – 179 447 – – – 230 586 – – –

18A, 18B #10-16 0.190 #3 114 270 – – – 150 416 – – – 198 572 – – – 19 #10-24 0.190 #3 124 290 – – – 150 425 – – – 164 542 – – – 20 #12-14 0.216 #2 154 339 – – – 170 493 – – – 219 622 – – –

21, 22 #12-14 0.216 #3 155 325 630 – – 170 475 887 – – 218 605 1,057 – – 23 #12-24 0.216 #5 – 275 537 615 674 – 393 730 996 996 – 483 813 1,219 1,219 24 1/4-14 0.250 #3 128 361 655 – – 185 519 966 – – 216 642 1,249 – –

25, 26, 27 1/4-20 0.250 #4 – 350 671 884 962 – 503 926 1,271 1,465 – 625 1,063 1,670 1,793 28 1/4-20 0.250 #5 – 336 656 894 900 – 499 931 1,262 1,323 – 651 1,128 1,613 1,701

Alumi-Flex® Screws 29, 30 #10-16 0.190 #3 107 285 – – – 164 428 – – – 215 569 – – –

31 #12-14 0.216 #3 100 284 586 – – 170 429 834 – – 198 574 834 – – 32, 33 1/4-14 0.250 #3 109 299 633 1,239 – 160 469 883 1,239 – 195 602 1,032 1,239 –

34 1/4-20 0.250 #4 – 293 565 870 870 – 437 821 1,172 1,172 – 574 1,078 1,321 1,321 For SI: 1 inch = 25.4 mm, 1 lbf = 4.45 N.

1Design strengths are based on laboratory tests. Resistance factors have been determined in accordance with the ADM. These values only apply to screws which are self-drilled.

2For tension connections, the lowest of the design pull-out, pull-over, and screw tension strength must be used for design.

ESR-4374 Page 8 of 12

TABLE 5A—ALLOWABLE (ASD) SHEAR (BEARING) CAPACITY OF ALUMINUM-TO-ALUMINUM SCREW CONNECTIONS (lbf)1,2,3,4

TYPE

SCREW

SIZE

NOMINAL

DIAMETER

(in.)

POINT

TYPE

HEAD

STYLE5

THICKNESS OF ALUMINUM (IN CONTACT – NOT IN CONTACT) WITH SCREW HEAD (inch) 6063-T5

(Fy = 16 ksi, Fu = 22 ksi) 6063-T6

(Fy = 25 ksi, Fu = 30 ksi) 6061-T6

(Fy = 35 ksi, Fu = 38 ksi) 0.0625

0.0625

0.0625

0.125

0.125

0.125

0.125

0.250

0.0625

0.0625

0.0625

0.125

0.125

0.125

0.125

0.250

0.0625

0.0625

0.0625

0.125

0.125

0.125

0.125

0.250 Bi-Flex® Screws

1 #8-18 0.164 #2 HWH 113 113 226 – 154 154 308 – 195 195 380 –

2 #8-18 0.164 #2 PPH 113 113 226 – 154 154 308 – 195 195 380 –

3 #10-16 0.190 #2 HWH 131 131 261 – 178 178 356 – 226 226 451 –

4 #10-16 0.190 #2 Pancake 131 131 261 – 178 178 356 – 226 226 451 –

5 #10-16 0.190 #2 PPH 131 131 261 – 178 178 356 – 226 226 451 –

6 #12-14 0.216 #2 HWH 149 149 297 – 203 203 405 – 257 257 513 –

7 #12-14 0.216 #2 PUFH 163 – – – 207 – – – 207 – – –

8 #12-14 0.216 #3 HWH 149 333 416 – 203 424 541 – 257 424 561 –

9 #12-14 0.216 #3 Pancake 149 335 425 – 203 426 442 – 257 426 442 –

10 #12-24 0.216 #5 HWH 149 149 423 607 203 203 547 607 257 257 559 607

11 1/4-14 0.250 #2 HWH 172 172 344 – 234 234 469 – 297 297 594 –

13 1/4-20 0.250 #3 HWH 172 324 453 – 234 412 623 – 297 412 725 –

15 1/4-20 0.250 #5 HWH 172 172 406 749 234 234 570 871 297 297 691 871

Dril-Flex® Screws

17 #10-16 0.190 #2 PPH 131 131 261 – 178 178 356 – 226 226 451 –

18A, 18B #10-16 0.190 #3 HWH 131 131 261 – 178 178 356 – 226 226 451 –

19 #10-24 0.190 #3 PWH 160 – – – 204 – – – 204 – – –

20 #12-14 0.216 #2 HWH 149 149 297 – 203 203 405 – 257 257 513 –

21 #12-14 0.216 #3 HWH 149 149 297 – 203 203 405 – 257 257 513 –

22 #12-14 0.216 #3 PUFH 168 326 – – 214 415 – – 214 415 – –

23 #12-24 0.216 #5 HWH 149 149 433 696 203 203 578 760 257 257 637 760

24 1/4-14 0.250 #3 HWH 172 172 344 – 234 234 469 – 297 297 594 –

25 1/4-20 0.250 #4 HWH 172 172 498 – 234 234 663 – 297 297 724 –

28 1/4-20 0.250 #5 HWH 172 172 500 761 234 234 655 761 297 297 687 761

Alumi-Flex® Screws

29 #10-16 0.190 #3 HWH 131 131 261 – 178 178 356 – 226 226 451 –

30 #10-16 0.190 #3 PUFH 111 – – – 142 – – – 142 – – –

31 #12-14 0.216 #3 HWH 149 327 – – 203 416 – – 257 416 – –

32 1/4-14 0.250 #3 HWH 172 388 521 – 234 493 535 – 297 493 535 –

33 1/4-14 0.250 #3 PUFH 152 288 441 – 194 367 546 – 194 367 546 –

34 1/4-20 0.250 #4 HWH 172 172 436 – 234 234 544 – 297 297 544 –

For SI: 1 inch = 25.4 mm, 1 lbf = 4.45 N. Notes for Tables 5A and 5B are on page 8.

TABLE 5B—DESIGN (LRFD) SHEAR (BEARING) CAPACITY OF ALUMINUM-TO-ALUMINUM SCREW CONNECTIONS (lbf)1,2,3,4

SCREW

TYPE

SCREW

SIZE

NOMINAL

DIAMETER

(in.)

POINT

TYPE

HEAD

STYLE5

THICKNESS OF ALUMINUM (IN CONTACT – NOT IN CONTACT) WITH SCREW HEAD (inch) 6063-T5

(Fy = 16 ksi, Fu = 22 ksi) 6063-T6

(Fy = 25 ksi, Fu = 30 ksi) 6061-T6

(Fy = 35 ksi, Fu = 38 ksi) 0.0625

0.0625

0.0625

0.125

0.125

0.125

0.125

0.250

0.0625

0.0625

0.0625

0.125

0.125

0.125

0.125

0.250

0.0625

0.0625

0.0625

0.125

0.125

0.125

0.125

0.250 Bi-Flex® Screws

1 #8-18 0.164 #2 HWH 169 169 338 – 231 231 461 – 292 292 584 –

2 #8-18 0.164 #2 PPH 169 169 338 – 231 231 461 – 292 292 584 –

3 #10-16 0.190 #2 HWH 196 196 392 – 267 267 534 – 338 338 677 –

4 #10-16 0.190 #2 Pancake 196 196 392 – 267 267 534 – 338 338 677 –

5 #10-16 0.190 #2 PPH 196 196 392 – 267 267 534 – 338 338 677 –

6 #12-14 0.216 #2 HWH 223 223 446 – 304 304 608 – 385 385 770 –

7 #12-14 0.216 #2 PUFH 245 – – – 311 – – – 311 – – –

8 #12-14 0.216 #3 HWH 223 500 624 – 304 636 812 – 385 636 841 –

9 #12-14 0.216 #3 Pancake 223 503 637 – 304 639 664 – 385 639 664 –

10 #12-24 0.216 #5 HWH 223 223 635 910 304 304 821 910 385 385 838 910

11 1/4-14 0.250 #2 HWH 258 258 516 – 352 352 703 – 445 445 891 –

13 1/4-20 0.250 #3 HWH 258 486 680 – 352 618 934 – 445 618 1,088 –

15 1/4-20 0.250 #5 HWH 258 258 609 1,124 352 352 855 1,307 445 445 1,037 1,307

Dril-Flex® Screws

17 #10-16 0.190 #2 PPH 196 196 392 – 267 267 534 – 338 338 677 –

18A, 18B #10-16 0.190 #3 HWH 196 196 392 – 267 267 534 – 338 338 677 –

19 #10-24 0.190 #3 PWH 240 – – – 306 – – – 306 – – –

20 #12-14 0.216 #2 HWH 223 223 446 – 304 304 608 – 385 385 770 –

21 #12-14 0.216 #3 HWH 223 223 446 – 304 304 608 – 385 385 770 –

22 #12-14 0.216 #3 PUFH 252 489 – – 321 623 – – 321 623 – –

23 #12-24 0.216 #5 HWH 223 223 649 1,045 304 304 868 1,140 385 385 955 1,140

24 1/4-14 0.250 #3 HWH 258 258 516 – 352 352 703 – 445 445 891 –

25 1/4-20 0.250 #4 HWH 258 258 747 – 352 352 995 – 445 445 1,086 –

28 1/4-20 0.250 #5 HWH 258 258 751 1,142 352 352 982 1,142 445 445 1,030 1,142

Alumi-Flex® Screws

29 #10-16 0.190 #3 HWH 196 196 392 – 267 267 534 – 338 338 677 –

30 #10-16 0.190 #3 PUFH 167 – – – 213 – – – 213 – – –

31 #12-14 0.216 #3 HWH 223 491 – – 304 624 – – 385 624 – –

32 1/4-14 0.250 #3 HWH 258 582 782 – 352 740 803 – 445 740 803 –

33 1/4-14 0.250 #3 PUFH 229 432 662 – 291 550 820 – 291 550 820 –

34 1/4-20 0.250 #4 HWH 258 258 655 – 352 352 816 – 445 445 816 –

For SI: 1 inch = 25.4 mm, 1 lbf = 4.45 N. Notes for Tables 5A and 5B are on page 8.

ESR-4374 Page 9 of 12

Notes for Tables 5A and 5B:

1Available strengths in shaded cells are based on laboratory tests, and exceed available strengths calculated in accordance with the ADM. Safety factors and resistance factors have been determined in accordance with the ADM. These values only apply to screws which are self-drilled.

2Available strengths in unshaded cells are based on calculations in accordance with the ADM. These values are applicable to screws which are self-drilled and to screws which are installed in existing holes in the aluminum which have the following dimensions: 0.177 inch for #8 screws; 0.201 inch for #10 screws; 0.228 inch for #12 screws;

0.266 inch for 1/4-inch screws.

3Available strengths for member thicknesses which are not addressed in the tables may be determined by calculation in accordance with the ADM.

4For lateral connections, the lower of the available shear (bearing) strength and screw shear strength must be used for design.

5Head style abbreviations denote the following: HWH = Hex Washer Head, PPH = Phillips Pan Head, PUFH = Phillips Undercut Flat Head, PWH = Phillips Wafer Head, and Pancake = Phillips Pancake Head.

TABLE 6A—ALLOWABLE (ASD) PULL-OUT STRENGTH OF SCREWS INSTALLED IN STEEL (lbf)1,2

SCREW TYPE SCREW

SIZE

NOMINAL

DIAMETER

(in.)

POINT

TYPE

DESIGN THICKNESS OF STEEL MEMBER NOT IN CONTACT WITH SCREW HEAD (INCH):

(Fy = 33 ksi, Fu = 45 ksi) (Fy = 36 ksi, Fu = 58 ksi) (Fy = 50 ksi, Fu = 65 ksi)

1/8 3/16 1/4 5/16 1/8 3/16 1/4 5/16 1/8 3/16 1/4 5/16

Bi-Flex® Screws

8, 9 #12-14 0.216 #3 387 523 – – 447 674 – – 447 755 – –

10 #12-24 0.216 #5 390 429 601 652 451 553 774 841 451 620 867 943

12, 13, 14 1/4-20 0.250 #3 533 620 – – 616 799 – – 616 895 – –

15, 16 1/4-20 0.250 #5 453 582 666 912 524 750 859 1,176 524 841 963 1,318

Dril-Flex® Screws3 17 #10-16 0.190 #2 297 – – – 383 – – – 428 – – –

18A, 18B #10-16 0.190 #3 297 – – – 383 – – – 428 – – –

19 #10-24 0.216 #3 546 – – – 704 – – – 704 – – –

21, 22 #12-14 0.216 #3 510 665 – – 658 858 – – 734 958 – –

23 #12-24 0.216 #5 507 891 1,020 1,020 654 1,149 1,316 1,316 654 1,149 1,469 1,469

24 1/4-14 0.250 #3 561 899 – – 724 1,160 – – 808 1,295 – –

25, 26, 27 1/4-20 0.250 #4 524 914 1,044 1,206 677 1,179 1,347 1,556 677 1,179 1,503 1,736

28 1/4-20 0.250 #5 524 914 1,044 1,206 677 1,179 1,347 1,556 677 1,179 1,503 1,736

For SI: 1 inch = 25.4 mm, 1 lbf = 4.45 N.

1Allowable strengths are based on laboratory tests. The safety factors have been determined in accordance with AISI S100. These values only apply to screws which are self-drilled.

2For tension connections, the lowest of the allowable pull-out, pull-over, and fastener tension strength must be used for design.

3Dril-Flex® fasteners have also been evaluated for use in steel-to-steel connections, as addressed in ESR-3332, which includes pull-out values for thinner steel members.

TABLE 6B—DESIGN (LRFD) PULL-OUT STRENGTH OF SCREWS INSTALLED IN STEEL (lbf)1,2

SCREW TYPE SCREW

SIZE

NOMINAL

DIAMETER

(in.)

POINT

TYPE

DESIGN THICKNESS OF STEEL MEMBER NOT IN CONTACT WITH SCREW HEAD (INCH):

(Fy = 33 ksi, Fu = 45 ksi) (Fy = 36 ksi, Fu = 58 ksi) (Fy = 50 ksi, Fu = 65 ksi)

1/8 3/16 1/4 5/16 1/8 3/16 1/4 5/16 1/8 3/16 1/4 5/16

Bi-Flex® Screws

8, 9 #12-14 0.216 #3 619 837 – – 715 1,079 – – 715 1,209 – –

10 #12-24 0.216 #5 624 643 961 1,044 721 829 1,238 1,345 721 929 1,387 1,507

12, 13, 14 1/4-20 0.250 #3 852 930 – – 985 1,199 – – 985 1,344 – –

15, 16 1/4-20 0.250 #5 726 931 1,066 1,460 839 1,200 1,374 1,882 839 1,345 1,540 2,109

Dril-Flex® Screws3 17 #10-16 0.190 #2 476 – – – 614 – – – 685 – – –

18A, 18B #10-16 0.190 #3 476 – – – 614 – – – 685 – – –

19 #10-24 0.216 #3 874 – – – 1,127 – – – 1,127 – – –

21, 22 #12-14 0.216 #3 816 1,064 – – 1,053 1,373 – – 1,175 1,532 – –

23 #12-24 0.216 #5 811 1,426 1,632 1,632 1,046 1,840 2,105 2,105 1,046 1,840 2,350 2,350

24 1/4-14 0.250 #3 897 1,439 – – 1,157 1,493 – – 1,292 2,072 – –

25, 26, 27 1/4-20 0.250 #4 838 1,462 1,670 1,930 1,081 1,886 2,154 2,490 1,081 1,886 2,405 2,779

28 1/4-20 0.250 #5 838 1,462 1,670 1,930 1,081 1,886 2,154 2,490 1,081 1,886 2,405 2,779 For SI: 1 inch = 25.4 mm, 1 lbf = 4.45 N.

1Design strengths are based on laboratory tests. The resistance factors have been determined in accordance with AISI S100. These values only apply to screws which are self-drilled.

2For tension connections, the lowest of the design pull-out, pull-over, and fastener tension strength must be used for design.

3Dril-Flex® fasteners have also been evaluated for use in steel-to-steel connections, as addressed in ESR-3332, which includes pull-out values for thinner steel members.

ESR-4374 Page 10 of 12

TABLE 7A—ALLOWABLE (ASD) SHEAR (BEARING) CAPACITY OF ALUMINUM-TO-STEEL SCREW CONNECTIONS (lbf)1,2,3,4,5

TYPE

SCREW

SIZE

NOMINAL

DIAMETER

(in.)

POINT

TYPE

HEAD

STYLE

6063-T5 (Fy = 16 ksi, Fu = 22 ksi)

6063-T6 (Fy = 25 ksi, Fu = 30 ksi)

6061-T6 (Fy = 35 ksi, Fu = 38 ksi)

Thickness of Aluminum – Thickness of Steel (inch) 0.0625

0.125

0.125

0.125

0.125

0.250

0.0625

0.125

0.125

0.125

0.125

0.250

0.0625

0.125

0.125

0.125

0.125

0.250 Bi-Flex® Screws

8 #12-14 0.216 #3 HWH 301(6) – – 470(6) – – 499(6) – –

9 #12-14 0.216 #3 Pancake 303(6) – – 473(6) – – 501(6) – –

10 #12-24 0.216 #5 HWH 293 708 619 458 841 735 486 841 735

13 1/4-20 0.250 #3 HWH 305(6) – – 477(6) – – 506(6) – –

15 1/4-20 0.250 #5 HWH 291 453 785 455 538 932 482 765 932

Dril-Flex® Screws8

21 #12-14 0.216 #3 HWH 300(7) – – 468(7) – – 496(7) – –

22 #12-14 0.216 #3 PUFH 323(7) – – 505(7) – – 535(7) – –

23 #12-24 0.216 #5 HWH 301 706 591 470 839 702 498 839 702

24 1/4-14 0.250 #3 HWH 301(6) – – 471(6) – – 499(6) – –

25 1/4-20 0.250 #4 HWH 292 766 – 457 910 – 484 910 –

28 1/4-20 0.250 #5 HWH 301 755 611 471 896 726 499 896 726

For SI: 1 inch = 25.4 mm, 1 lbf = 4.45 N. See notes below Table 7B.

TABLE 7B—DESIGN (LRFD) SHEAR (BEARING)…