GL-PD-09-02D HOT WEATHER FR BOOT 4-9-2024 .pdf

DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.

GL-PD-09-02D

9April 2024

SUPERSEDING

GL-PD-09-02C

30 July 2012

PURCHASE DESCRIPTION

BOOTS, COMBAT, HOT WEATHER - FLAME RESISTANT

This Purchase Description (PD) is approved for use by the DLA Troop Support and is available for use by all Departments and Agencies of the Department of Defense (DoD).

1. SCOPE

1.1 Scope. This PD covers the requirements for a flame and conductive heat resistant combat boot with a direct attach soling system for use in hot weather environments. Unless otherwise indicated, all performances called out in this PD pertain to an item made on a size 10R last.

1.2 Classification. The boot will be available in the following sizes and widths as specified

1.2.1 Types.

Type I - DELETED

Type II - Coyote 498

1.2.2 Sizes.

SIZE SCHEDULE

Size: 2 through 15 (whole and half sizes), 16 (whole size only)

Widths: Narrow (B), Regular (D), Wide (EE), and X-Wide (EEEE)

2. APPLICABLE DOCUMENTS

Comments, suggestions, or questions on this document should be address to: Department of the U.S. Army, DEVCOM-Soldier Center, ATTN: FCDD-SCD-PEI, 10 General Greene Avenue, Natick, MA 01760-5019.

FSC 8430

INCH-POUND

2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this PD. This section does not include documents cited in other sections of this PD or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this PD, whether or not they are listed.

2.2 Government documents.

2.2.1 Specifications. standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

COMMERCIAL ITEM DESCRIPTIONS

A-A-52071 - Tape, Textile, Cotton, General Purpose A-A-55093 - Laces, Nylon

DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-PRF-3122 - Leather, Cattlehide, for Footwear for Uppers and Gussets, Chrome Tanned, Fatliquored MIL-PRF-5038 - Tape: Textile and Webbing MIL-DTL-32075 - Label: For Clothing, Equipage, and Tentage, (General Use)

(Copies of these documents are available online at https://quicksearch.dla.mil.)

2.2.2 Other Government documents. The following other Government documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues shall be those cited in the solicitation or contract.

DRAWINGS

U.S. ARMY, DEVCOM - SOLDIER CENTER

2-1-1635 - Speed Lace Assembly

(Copies of drawings are available from the U.S. Army, DEVCOM, Soldier Center, ATTN:

FCDD-SCD-PEI, 10 General Greene Avenue, Natick, MA 01760-5019.)

OTHER GOVERNMENT DOCUMENTS AND PUBLICATIONS

ENVIRONMENTAL PROTECTION AGENCY

Federal Insecticide, Fungicide and Rodenticide Act (FIFRA) (40 CFR Part 162) State Registration of Pesticide Products

(Copies of these (this) documents are available online at https://www.epa.gov/pesticides.)

https://quicksearch.dla.mil/ https://www.epa.gov/pesticides

(Copies of documents required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.)

2.3 Non-Government standards and other publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents are those cited in the solicitation or contract (see 6.2).

AMERICAN ASSOCIATION OF TEXTILE CHEMISTS AND COLORISTS (AATCC)

AATCC EP9 - Evaluation Procedure for Visual Assessment of Color Difference of Textiles AATCC TM22 - Water Repellency: Spray Test AATCC TM100 - Assessment of Antibacterial Finishes on Textile Materials AATCC TM135 - Dimensional Changes of Fabrics after Home Laundering

(Copies of these documents are available online at https://aatcc.org.)

AMERICAN SOCIETY FOR QUALITY(ASQ)

ANSI/ASQ Z1.4 - Sampling Procedures and Tables for Inspection of Attributes

(Copies of this document are available online at https://asq.org.)

AMERICAN TYPE CULTURE COLLECTION (ATCC)

ATCC – 6538 - Staphylococcus Aureus ATCC – 9027 - Pseudomonas Aeruginosa

(Information available online at http://www.atcc.org.)

ASTM INTERNATIONAL

ASTM E96/E96M - Standard Test Methods for Water Vapor Transmission of Materials ASTM D297 - Standard Test Method for Rubber Products-Chemical Analysis ASTM D412 - Standard Test Method for Vulcanized Rubber and Thermoplastic Elastomers (Tension Elongation) ASTM D471 - Standard Test Method for Rubber Property-Effect of Liquids ASTM D624 - Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers ASTM D1052 - Standard Test Method for Measuring Rubber Deterioration-Cut Growth Using Ross Flexing Apparatus ASTM D1424 - Standard Test Method for Tearing Strength of Fabrics by Falling Pendulum Type (Elmendorf) Apparatus ASTM D1630 - Standard Test Method for Rubber Property-Abrasion Resistance (Footwear Abrader) ASTM D1777 - Standard Test Method for Thickness of Textile Materials ASTM F1976 - Standard Test Method for Impact Attenuation of Athletic Shoe Cushioning Systems and Materials https://aatcc.org/ https://asq.org/ http://www.atcc.org/

ASTM D2240 - Standard Test Method for Rubber Property-Durometer Hardness ASTM D3273 - Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber ASTM D3574 - Standard Test Method for Flexible Cellular Materials - Slab, Bonded, and Molded Urethane Foams ASTM D3787 - Standard Test Method for Bursting Strength of Textiles Constant Rate-of-Traverse (CRT) Ball Burst Test ASTM D4786 - Standard Test Method for Stitch Tear Strength, Single Hole ASTM D4966 - Standard Test Method for Abrasion Resistance of Textile Fabrics (Martindale Abrasion Tester Method) ASTM D5034 -Standard Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test) ASTM D6413/D6413M - Standard Test Method for Flame Resistance of Textiles (Vertical Test)

(Copies of these documents are available online at https://www.astm.org.)

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA-1971 - Standard on Protective Ensembles for Structural Firefighting and Proximity Fire Fighting

(Copies of this document are available online at https://www.nfpa.org.)

SATRA GLOBAL TEST METHODS

TM2 - Tensile properties of insole materials TM3 - Flexing index TM14 - Resistance to scuffing by mild circular abrasion TM31 - Abrasion Resistance – Martindale method TM64 - Compression Set – constant stress method TM80 - Transverse Tensile strength of sheet materials TM83 - Measurement of the area shape retention and collapsing load of formed toe puff and stiffener materials TM98 - Dimensional stability with changes in atmospheric humidity TM101 - Surface peel strength of insole materials TM144 - Friction (Slip Resistance) of Footwear and Floorings (Rough ice method) TM233 - Floor markings by solings or top pieces TM344 - Hydrolysis of Polyurethane Solings and polyurethane coated leathers

(Copies of these documents are available from SATRA Technology Centre Ltd, Wyndham Way, Telford Way, Kettering, Northants, NN16 8SD, United Kingdom at testmethods@satra.com.)

2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

https://www.astm.org/ https://www.nfpa.org/

3. REQUIREMENTS

3.1 Terms.

3.1.1 First article. When specified (see 6.3), a sample shall be subjected to first article inspection in accordance with 4.2.

3 1.2 Conformance inspection. When specified, a sample shall be subjected to inspection in accordance with 4.3.

3.2 Standard sample. The leather of the finished boots shall match a swatch of cattlehide leather upper for shade and sueded flesh appearance as well as the color shade of components unless otherwise indicated and shall be equal to or better than the sample with respect to all characteristics for which the standard is referenced (see 6.4).

3.2.1 Visual shade matching (All components). The color and appearance of the exterior components shall match the standard shade and appearance in 3.2 when tested as specified in

4.4.2. All associated exterior components shall be subdued and of a complimentary shade.

3.3 Recycled, recovered, environmentally preferable, or biobased materials. Recycled, recovered, environmentally preferable, or biobased materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs.

3.4 Components

3.4.1 Leather.

3.4.1.1 Upper leather. The leather shall be flesh out drum dyed Coyote 498 with color penetrating throughout the thickness of the hide so that the chrome tannage is not visible. The leather for the boot vamp, outside eyestays, inside eyestays, and outside counterpocket shall conform to MIL-PRF-3122, Type I, Treatment A and Treatment B. The leather for the boot backstay shall conform to MIL-PRF-3122, Type II, Treatment A. The following exceptions to MIL-PRF-3122 shall be applicable for the upper leathers:

a. The flesh surface shall be sueded as to produce a fine uniform nap.

b. The grain surface shall be lightly buffed to remove the surface of the grain only

c. The finish requirements for the leather shall not apply.

d. The tear strength requirements for the backstay shall not apply. Eighty percent (80%) of the backstay leather samples must meet a minimum of 23 pounds stitch tear.

e. The thickness shall be as specified for the cut parts in Table X.

f. As an alternative, the inside eye stay may conform to MIL-PRF-3122, Type II, Treatment A.

3.4.2 Insoles The boot insole shall meet the requirements specified in Table I when tested as specified in 4.4.2.

TABLE I. Insole performance requirements.

Characteristics Physical Requirements Thickness , inches (min.) 0.090 Fungal resistance (Level) 10 Wet Tensile kgf/cm2 (min.) 70 Flexing Index Cycles (5000 cycles) (min.) 3.7 Abrasion Resistance

Cellulose board mm3 (max.)

Non-Woven board (Revolutions) (min.)

Dry

Wet

25,600

Transverse Tensile-kgf/cm2 (min.) Dry 8 Dimensional Stability Percent (max.) 0.7 Peel Strength kgf/cm2 (min.) 0.5

3.4.3 Fabrics.

3.4.3.1 Upper fabric - exterior. Upper exterior fabric shall be Coyote 498 in color and meet the requirements of Table II when tested as specified in 4.4.2.

TABLE II. Upper fabric performance requirements.

Characteristic Requirements

Water Repellency (Spray Rating) Initial (min.)

After 5 launderings (min.)

Martindale Abrasion, revolutions/cycles (min.)

Fabric Only; Dry 1/

153,600/ 9,600

Breaking Strength (lbs.) (min.)

Warp Fill

Tear Strength (lbs.) (min.)

1/ As described in the test method; Martindale Tester; Pressure applied: 12 kPa; visually examine specimens after each 3200 cycles; Abradant changed after each 3200 cycle.

3.4.3.2 Upper fabric - lining. The lining shall approximate the color of gray herringbone or equal, based on Government approval and consist of a textile that meets the Martindale Abrasion, bursting strength and antimicrobial performance listed in Table III when tested as specified in

4.4.2. Any antimicrobial technology used shall be an EPA-registered antimicrobial and shall be durable for the life of the item. The requirements of this paragraph shall apply to all lining within the boot including the fabric top cover attached to the removable cushioned insert and insole foam.

TABLE III. Lining cloth performance requirements.

Characteristics Requirements Martindale Abrasion, revolutions/cycles (min.)

Fabric Only; Dry 1/

153,600/ 9,600

Bursting Strength, pounds (min.)

Fabric Only

Bacterial Resistance, percent reduction (min.), Staphylococcus Aureus Pseudomonas Aeruginosa

1/ As described in the test method; Martindale Tester; Pressure applied: 12 kPa; visually examine specimens after each 3200 cycles; Abradant changed after each 3200 cycle.

3.4.3.3 Upper fabric – system. The overall upper fabric system shall perform as specified in Table IV when tested as specified in 4.4.2.

TABLE IV. Upper fabric sub-system performance.

Characteristic Requirements After flame, seconds (max) 1/ 10 Afterglow, seconds (max) 1/ 10 Average Char Length, inches (max) 1/ 4 1/ Test results for each characteristic shall be reported as Pass/Fail

3.4.4 Material components.

3.4.4.1 Box toe. The box toe shall be a thermoplastic material and shall conform to the performance requirements of Table V went tested in accordance with 4.4.2.

3.4.4.2 Counter. The counter shall be a thermoplastic material and shall conform to the performance requirements of Table V went tested in accordance with 4.4.2.

TABLE V. Thermoplastic performance requirements.

Initial Collapsing Load (N), (min.) 130 Resilience, Percent (min.) 1/ 25 Moisture Resistance, Percent (min.) 2/ 80 Area Shape Retention, Percent (min.)

Initial 10th collapse

1/ Resilience is percentage retention of initial collapsing load after ten collapses.

2/ Moisture resistance is percentage retention of initial dry collapsing load after 1 hour immersion.

3.4.4.3 Shank. The fiberglass shank shall be bonded to the insole and shall conform to the shape of the last. The fiberglass shank (glass and resin area), when cured, shall be 5/8 (± 1/16) inch in width.

3.4.4.4 Eyelets. There shall be two (2) pair of eyelets located at the lower area of the eyestays for all sizes. The eyelets shall be brass, with a coated nylon Coyote 498 finish for Type II, size AA.

3.4.4.5 Speed lace assembly. The speed lace assembly shall be brass with a coated nylon Coyote 498 finish. The speed lace assemblies shall be evenly spaced above the eyelets. There shall be four (4) pair of assemblies for sizes 2 through 5 and five (5) pair of assemblies for sizes

5.5 through 16. The speed lace assembly shall meet the requirements of drawing 2-1-1635.

3.4.4.6 Collar foam. The closed - cell foam padding shall not absorb water, shall not be susceptible to hydrolysis, shall have a compression set such that comfort is provided for the life of the item, and shall not promote fungal or bacterial growth.

3.4.4.7 Drainage eyelets and washers. The drainage eyelets and boot construction must allow water out, but not allow sand to get into the boot. Eyelets shall be permanently fixed to the boots for the life of the item and shall have a subdued finish to blend with the color of the Coyote 498, shade flesh-out leather. Placement of the eyelets shall be in the inner arch of the boot, at a location that allows the greatest possible drainage of water from the boot. Internal components of the boot must not interfere with the proper drainage from the eyelets. Drainage eyelets shall be at the same location on all boots (with variation according to boot size). The eyelet and washers shall be brass. The washers shall have an outside diameter of 0.463 (± 0.005) inch, and an inside diameter of 0.220 (± 0.005) inch, and a thickness of 0.009 (± 0.003) inch.

3.4.4.8 Laces. The laces shall conform to Type III, Class 1 of A-A-55093. The color of the laces shall be Coyote 498. The length of the laces shall be a minimum of 66-inches.

3.4.4.9 Back seam tape. The tape shall conform to A-A-52071, Type I, Class 3, 1/2-inch or

17/32-inch wide. The color shall be Coyote 498, matching that of the standard sample. As an alternate, the tape shall conform to MIL-PRF-5038, Type III, Class 1, 1/2-inch wide.

3.4.4.10 Binding tape. The binding tape shall be nylon and bind the exposed edges of fabric.

The color shall be Coyote 498, matching that of the standard sample. The binding tape shall be bound to the upper fabric for the life of the item.

3.4.4.11 Thread. The thread shall be bright, high tenacity, continuous filament nylon, soft or bonded finished, 50-135 Tex size and have a melting point not lower than 472°F. The color shall be Coyote 498 for all thread visible when the boot is worn. The thread shall be sized to provide adequate strength for the life of the boot.

3.5 Soling system requirements.

3.5.1 Midsole construction and design. The cushion midsole shall be directly attached to the upper and shall be achieved either through an injection molding or open pouring method. The design shall be as shown in Figures 2a and 2b. The cushion midsole shall be pure polyether polyurethane, color Coyote 498 and have an exterior texture pattern that is a good match to the Government standard sample. The dimensions of the cushion midsole shall be sufficient to meet the salient characteristics as specified herein.

3.5.2 Midsole compound requirements. The requirements for the pure polyether polyurethane cushioned midsole are based on testing done on slabs (according to ASTM procedures) and are not actual midsoles. The requirements shall be as specified in Table VI when tested in accordance with 4.4.2.

TABLE VI. Midsole polyether polyurethane requirements.

Characteristic Minimum Maximum Density gm./cc. 0.40 0.60 Hardness shore A 50 75 Tensile strength kgf/cm. sq. 25 N/A Elongation, Percent 250 N/A Tear Strength Die T kg./cm. 3.7 N/A Volume Swell, Percent IRM 903 at 24 hrs.) N/A 10 Compression Set (Percent) N/A 20 Ross Flex (1-inch X 6-inch) at -5 °C (Percent) 150,000 cycles / 1/

1/ Conditioned for 2 hours

3.5.3 Outersole. The outersole design shall be the Quabaug Vibram 360-Degree Lug Model, or equal, as shown in Figure 5. The outsole shall be a minimum of 18-iron (9.5 millimeters) in thickness of solid rubber at each of the lugs. The color of the outersole and any identification plug shall be Coyote 498.

3.5.3.1 Rubber outersole compound requirements. The requirements for the rubber outsole are based on testing done on slabs (according to ASTM procedures) and are not actual soles. The requirements shall be as specified in Table VII when tested in accordance with 4.4.2 and as specified in Table XI.

TABLE VII. Rubber outsole compound requirements.

Characteristics Outsole NBS abrasion (min.) 120 Hardness (shore A) 57-67 Stitch Tear, pounds (min.)

Dry Fuel B 1/

TABLE VII. Rubber outsole compound requirements. - Continued

Characteristics Outsole Die C tear strength, pounds (min.) 250 Ross flex, Oil #3, percent (max.) 50,000 flexes 2/

Volume swell, Percent (max.)

Fuel B (46 hrs.) 3/

Non-marking Pass Tensile, Pounds (min.) 2,100 Elongation, Percent (min.) 400 Cold Flex, -23 °C percent (max.)

7,500 flexes 4/

<500 Transitional Hardness (max. change) After 2 hrs. at -23°C

+10 point shore hardness

Slip Index, rough/ice (min) 5/ 0.20 1/ Test conducted after 46 hours in Fuel B at Room Temperature.

2/ Apply one (1) drop oil per 6,000 flexes 3/ Test conducted at Room Temperature with ASTM test slabs.

4/ Test conducted after 2 hours conditioning 5/ Test in accordance with SATRA TM144, frosted ice method, flat mode. Sole to be pre-conditioned with 40 grit sandpaper for six (6) cycles.

3.5.4 Shock attenuation and kinematic parameters. Whole boot shock attenuation as measured in accordance with ASTM F1976 shall be optimized for user comfort and injury reduction and shall not exceed 18.0 G in the Forefoot and shall not exceed 14.0 G in the Rearfoot. Shock attenuation shall be achieved through the choice of standard materials and construction techniques used in commercial industry and found in this PD. Human biomechanical gait parameters while wearing combat boots shall not be compromised to achieve increased shock attenuation. Testing shall be performed on the completed boot with the removable cushion insert.

3.5.5 Bond strength. The bond achieved between the boot upper, cushion midsole, and outsole shall be resistant to any delamination for the life of the item.

3.5.5.1 Entire mid-sole to upper. The bond strength shall not be less than 130 pounds. Testing shall be performed on the end item as specified in 4.4.4.

3.5.5.2 Outersole to cushion midsole bond strength. The outersole to cushion midsole bond strength shall not be less than 100 pounds. Testing shall be performed on the end item as specified in 4.4.4.

(NOTE The components of the sole shall be layered in such a manner that the specified bond strengths will be achieved. If test results find values to be less than specified due to material failure in regard to the bond between the layers, the test will be classified as a failure.

3.5.6 Removable cushion inserts. The cushion inserts shall be a low-density polyether polyurethane heel cup support made of a polyurethane system, medium black in color, and molded to a fabric top cover. The polyurethane shall meet the requirements of Table VIII. The fabric top cover shall meet the requirements of 3.4.3.2. The total thickness of the removable cushion insert shall be 0.180 (±0.025) inch forward of the instep, and 0.250 (±0.030) -inch elsewhere.

TABLE VIII. Removable cushion insert requirements.

Density, (lbs./cu. ft.) 16-19 Foam Hardness, Shore 00 50-65 Tensile strength, Pounds per square inch (min.) 82 Compression set, Percent (max.)

At 25% (77°F)

At 50% (77°F)

3.5.7 Insole foam. Microcellular polyurethane foam, 0.125 (± 0.01) inch thick, shall be permanently attached to the top of the insole board. The top of the foam shall be permanently covered with a fabric top cover which meets the requirements of 3.4.3.2. The foam shall meet the requirements of Table IX when tested as specified in 4.4.2.

TABLE IX. Insole foam requirements.

Characteristics Requirement Density, (lbs./cu.ft.) 19 - 23 Tensile Strength, Pounds per sq. inch -PSI (min.) 60 Compression set, Percent (max.)

At 50% compression, 70°C

Resilience/Ball Rebound (min.) 8

3.6 Boot design. The boot shall have a fabric and leather upper, speed lacing system, drainage eyelets, padded collar, removable cushion insert, fungal resistant lining and a direct attach soling system with a polyether midsole and rubber outsole (see Figures 2A and 2B).

3.6.1 Vamp design. The vamp design shall be such as to allow for the leather Vamp to extend up the gusset to approximately the second eyelet of the boot (see Figures 3A and 3B).

3.6.2 Boot height. The height of the finished boot, measured upward on the outside from the bottom of the tread area at the breast of the heel area to the top of the boot, shall be 10.5 (± 0.25) inches on size l0R and shall graduate up and down between sizes and widths.

3.6.3 Boot weight (10R). The weight of finished boot with cushion insert shall be

2.0 (-0, +0.15) pounds per boot.

3.6.4 Gusset design. The gusset design shall be such that the gusset attaches to the inside of the boot upper along the eyelet stay approximately 2-inches below the top of the comfort collar.

(See Figures 4A and 4B).

3.7 Lasts and molds. The boots shall be made on commercial last model “FMT U3813-1 Military” or equal based on government approval. An electronic table of last dimensions as well as last bottom files for each size and 3-dimensional data file for sizes 10N (B), 10R (D), 10W (EE) and 10XW (EEEE) for the Direct Attach lasts are available from the U.S. Army, DEVCOM, Soldier Center, ATTN: FCDD-SCD-PEC, 10 General Greene Avenue, Natick, MA 01760-5019. The numerical size of the boot shall correspond with the numerical size of the last used to produce the boot (i.e. a size 10R boot shall be produced on a size 10R last). The Direct Attach last has a common last bottom shared by N and R lasts and a common last bottom shared by W and XW lasts for each whole and half size. The Direct Attach (either Injection Molding or Open Pouring) process shall utilize a separate cushion midsole mold to produce N and R widths for each whole and half size. The Direct Attach process shall use a separate cushion midsole mold to produce W and XW widths for each whole and half size. The total number of molds required to produce the full size tariff shall be 58 molds.

3.8 Construction.

3.8.1 Cutting uppers. The leather shall conform to the thickness specified in Table X. None of the upper parts shall be split or shaved. Vamps shall be cut from the bend area of the side leather.

TABLE X. Required thickness (ounces) of leather uppers.

Part Minimum Maximum Vamp 5 6 Outside Counterpocket 4-1/2 6 Outside Eyelet Stay 4-1/2 6 Inside Eyelet Stay 2-1/2 3-1/2 Backstay 2-1/2 3-1/2

3.8.2 Skiving. Skiving of upper leather parts is permitted.

3.8.3 Boot finishing. No finish or topcoat shall be used.

3.9 End item performance requirements.

3.9.1 Whole boot moisture vapor transmission rate (MVTR). The whole boot breathability of the hot weather boot shall not be less than 7.0 grams/hour. Testing shall be as specified in 4.4.4.

3.9.2 Thermal protection. The boot shall meet the Flame Resistance and Thermal Conductive Heat Resistance requirements. Testing shall be as specified in 4.4.4.

3.9.2.1 Flame resistance. The boot shall meet the Flame Resistance Test Four requirements of NFPA 1971 when tested as specified in 4.4.4.

3.9.2.2 Upper heat resistance. The boots shall meet the Thermal Conductive Heat Resistance Test One requirements of NFPA 1971 when tested as specified in 4.4.4.

3.9.2.3 Sole heat resistance. The boots shall meet the Thermal Conductive Heat Resistance Test Two requirements of the NFPA 1971 when test as specified in 4.4.4.

3.10 Marking, permanent identification. With the exception of Product Demonstration Models (PDMs), the inside top shaft or gusset of each boot shall be permanently marked with the correct American and Mondopoint size and width, the company or brand name, contract number (Example: 04-D-1234), and the contractor’s identifying symbol in block form. The boot shall contain a manufacturing tracking lot number and Born Date. All printing/marking must be clearly legible, 12 font (NOTE Arial is recommend). Embossing of a company or brand name on the exterior of the boot is not permitted. The interior boot label shall include the component designation “HW-FR Boot” and the words “This National Stock Number (NSN) is authorized for U.S. Army Flight Use.” Unit packs will include NSNs and Universal Product Code (UPC) bar codes as specified in the contract. Each symbol must be human and scanner readable.

3.10.1 Instruction/ barcoding tag. The instruction label/tag is to be tied to the finished boots, and the print size shall be 1/8 (± 1/32) inch. The instruction label/tag shall be printed using the data specified in 3.10.3. Each item shall be individually bar-coded with a label/tag conforming to Type VIII, Class 17, of MIL-DTL-32075. The bar-coding element shall be a 13 digit National Stock Number (NSN). The bar-code type shall be a medium to high code density. It shall be located so that it is completely visible on the item when it is folded and/or packaged as specified in the contract and in a manner that causes no damage to the item. As an option, a hang tag identifying the features of the boot is permitted.

3.10.2 Tags and labels. Component and boot feature hangtags may be attached to the boots.

3.10.3 Use and care instructions. The label shall include the information as specified in Figure 1.

3.11 Workmanship. The finished boot components shall conform to the quality of product established by this document. The occurrence of defects shall not exceed the contractor’s own quality assurance standards and the quality assurance standards defined by the technical data in the bid package.

4. VERIFICATION

4.1 Classification of inspections. The inspection requirements specified herein are classified as follows:

a. First article inspection (see 4.2).

b. Conformance inspection (see 4.3).

4.2 First article inspection. First article inspection when required (see 3.1.1) shall be examined for the defects specified in 4.4.3 and tested for the characteristics in 4.4.2.

4.3 Conformance inspection. Conformance inspection (see 3.1.2) shall include the examinations of 4.4 and the testing in 4.4.2 and 4.4.4. Unless otherwise specified sampling for inspection shall be performed in accordance with ANSI/ASQ Z1.4. as set forth within the contract.

4.4 Inspection and component testing.

4.4.1 In-process inspection. Inspection shall be made at any point or during any phase of manufacturing to determine whether the components are as specified or operations and/or assemblies are accomplished as specified. The Government reserves the right to exclude from consideration for acceptance any material or service for which in-process inspection has indicated nonconformance.

4.4.2 Component testing. The components shall be tested for the characteristics listed in Table XI. The methods of testing specified where applicable shall be used. The sampling plan shall be as follows:

Lot size (yards or units) Sample size Under 800 2 801 - 22,000 5 22,001 and above 8

TABLE XI. Component testing.

Characteristic by Component

Requirement Paragraph

Test Method

Upper Leather 3.4.1.1 Range of Characteristics 3.4.1.1 MIL-PRF-3122 Shade Evaluation 3.4.1.1 1/ Insole 3.4.2 Thickness 3.4.2 & Table I ASTM D1777 2/ Fungal resistance 3.4.2 & Table I ASTM D3273 Wet Tensile 3.4.2 & Table I SATRA TM2 Flexing Index 3.4.2 & Table I SATRA TM3

TABLE XI. Component testing. - Continued

Insole 3.4.2 Continued Abrasion Resistance Cellulose board

Non-Woven board (Dry and Wet)

3.4.2 & Table I

3.4.2 & Table I

SATRA TM14

SATRA TM31

Transverse Tensile-Dry 3.4.2 & Table I SATRA TM80 Dimensional Stability 3.4.2 & Table I SATRA TM98 Peel Strength 3.4.2 & Table I SATRA TM101 Boot Upper Fabric – Exterior 3.4.3.1

Spray Rating

After 5 launderings

3.4.3.1& Table II

AATCC TM22

3.4.3.1 & Table II AATCC TM22 3/ Martindale Abrasion (Fabric Only, Dry) 3.4.3.1 & Table II ASTM D 4966 4/

Breaking strength

3.4.3.1 & Table II ASTM D5034

3.4.3.1 & Table II ASTM D5034

Tear Strength

3.4.3.1 & Table II ASTM D1424

3.4.3.1 & Table II ASTM D1424

Boot Fabric – Lining 3.4.3.2 Martindale Abrasion (Fabric Only, Dry) 3.4.3.2 & Table III ASTM D 4966 4/ Bursting Strength (Fabric Only) 3.4.3.2 & Table III ASTM D 3787 Bacterial Resistance Staphylococcus Aureus Pseudomonas Aeruginosa

3.4.3.2 & Table III

3.4.3.2 & Table III

4.5.5

AATCC100 & ATCC 6538

AATCC100 & ATCC 9027

After flame (after 1 laundering) 3.4.3.3 & Table IV ASTM D6413 3/ Afterglow (after 1 laundering) 3.4.3.3 & Table IV ASTM D6413 3/ Average Char Length (after 1 laundering) 3.4.3.3 & Table IV ASTM D6413 3/

UPPER COMPONENTS 3.4.4

Box Toe 3.4.4.1 Initial Collapsing Load (N) 3.4.4.1 & Table V SATRA TM83 Resilience (%) 3.4.4.1 & Table V SATRA TM83 5/ Moisture Resistance (%) 3.4.4.1 & Table V SATRA TM83 6/ Area Shape Retention (%)

3.4.4.1 & Table V

3.4.4.1 & Table V

SATRA TM83

Counters 3.4.4.2 Initial Collapsing Load (N) 3.4.4.2 & Table V SATRA TM83 Resilience (%) 3.4.4.2 & Table V SATRA TM83 5/ Moisture Resistance (%) 3.4.4.2 & Table V SATRA TM83 6/ Area Shape Retention (%) Initial

3.4.4.2 & Table V

3.4.4.2 & Table V

Shank 3.4.4.3 Width 3.4.4.3 Measure with calibrated ruler Eyelets 3.4.4.4 Visual Speed Lace Assembly 3.4.4.5 Visual Collar Foam 3.4.4.6 Visual Drainage eyelets and Washers 3.4.4.7 Visual Laces 3.4.4.8 Range of Characteristics 3.4.4.8 A-A-55093 Shade Evaluation 3.4.4.8 1/ Back Seam Tape 3.4.4.9 Range of Characteristics 3.4.4.9 A-A-52071 or

MIL-PRF-5038

Binding Tape 3.4.4.10 Visual Thread 3.4.4.11 Visual Polyether Polyurethane (Cushion Midsole) 3.5.1 & 3.5.2 Shade Evaluation 3.5.1 1/ Density (gm./cc.) 3.5.2 & Table VI ASTM D297 Hardness (shore A) 3.5.2 & Table VI ASTM D2240 7/ Tensile strength (kgf./cm. sq.)

(after 7 day hydrolysis)

3.5.2 & Table VI

ASTM D3574 Test E

8/ SATRA TM344

Elongation (%) (after 7 day hydrolysis)

3.5.2 & Table VI

ASTM D3574 Test E 8/

SATRA TM344

Tear strength Die T (kg./cm.) 3.5.2 & Table VI ASTM D3574 Test F 8/ Volume swell (%) IRM 903 (at 24 hrs.) 3.5.2 & Table VI ASTM D471 8/, 9/ Compression Set % 3.5.2 & Table VI SATRA TM64 8/ Ross flex (1-inch x 6-inch) at 5oC 3.5.2 & Table VI ASTM D1052 10/, 11/

Outsole (rubber) 3.5.3 Shade Evaluation 3.5.3 1/ NBS abrasion 3.5.3.1 & Table VII ASTM D1630 Hardness (shore A) 3.5.3.1 & Table VII ASTM D2240 7/ Stitch Tear (Dry)

(Fuel B)

3.5.3.1 & Table VII

3.5.3.1 & Table VII

ASTM D4786

ASTM D4786

Die C tear strength 3.5.3.1 & Table VII ASTM D624 Ross flex, Oil #3 3.5.3.1 & Table VII ASTM D1052 Volume swell, Fuel B (after 46 hrs.) 3.5.3.1 & Table VII ASTM D471 Non-marking 3.5.3.1 & Table VII SATRA TM233 Tensile 3.5.3.1 & Table VII ASTM D412 Elongation 3.5.3.1 & Table VII ASTM D412 Cold Flex (at -23°C) 3.5.3.1 & Table VII ASTM D1052 Transitional Hardness (2 hrs. at -23°C) 3.5.3.1 & Table VII ASTM D2240 Slip Index, rough/ice 3.5.3.1 & Table VII SATRA TM144 Removable Cushion Insert (Polyurethane) 3.5.6 Density 3.5.6 & Table VIII ASTM D3574 Test A Foam Hardness 3.5.6 & Table VIII ASTM D2240 Tensile strength 3.5.6 & Table VIII ASTM D3574 Test E Compression set At 25%, 77°F

At 50%, 77°F

3.5.6 & Table VIII

3.5.6 & Table VIII

ASTM D3574 Test D ASTM D3574 Test D

Insole Foam 3.5.7 Density 3.5.7 & Table IX ASTM D3574 Option A Tensile Strength 3.5.7 & Table IX ASTM D3574 Option E Compression set at 50%, 70°C 3.5.7 & Table IX ASTM D3574 Option D Resilience/Ball rebound 3.5.7 & Table IX 5/

1/ The color and appearance of the components of the boot as specified shall match the standard sample when viewed using the AATCC EP 9, Option C, (see 6.7) with a primary light source simulating the spectral quality of average daylight, CIE Illuminant D65, with a color temperature of 6500 (± 200) Kelvin (K) illumination of 100 (± 20) foot candles Alternatively, the color and appearance of the components of the boot when specified shall match the standard sample with a primary light source simulating artificial daylight, CIE Illuminant D75, with a color temperature of 7500K (± 200) illumination of 100 (± 20) foot candles in lieu of D65. (See 6.7.1). The components of the boot shall also be a good match to the standard sample with a secondary source simulating the spectral quality of incandescent lamplight, CIE Illuminant A, with a color temperature of 2856K (± 200). DD1222’s shall reflect which light source is used. If the light source is not indicated on the DD1222, D65 will be assumed by the Government Shade Laboratory.

2/ A thickness gauge of the dead-weight type equipped with a dial graduated to read directly to

0.001 inches shall be used. The presser foot shall be circular, with a diameter of

1.129 (± 0.001) inches and with moving parts weighted to apply a total load of 0.60 (± 0.03) pounds per square inch (psi) to the specimen. The anvil shall be not less than 1.129-inches in diameter. The presser foot and anvil surface shall be paned to within 0.001 inches and shall be parallel to each other to within 0.001 inches.

3/ Launder in accordance with AATCC TM135, Table I Condition:1, II, Ai 4/ Martindale Tester; Pressure applied: 12 kPa; visually examine specimens after each 3200 cycles; abradant changed after each 3200 cycles. Use Option 1 for evaluation; no hole appears.

5/ Resilience is percentage retention of initial collapsing load after ten collapses.

6/ Moisture resistance is percentage retention of initial dry collapsing load after 1 hour immersion.

7/ Thickness of test sample used shall be as stated in the respective ASTM method.

8/ Thickness of test sample used shall equal 12.7 millimeters (0.5-inches) from test slabs.

9/ Test conducted after 24 hours at Room Temperature with ASTM test slabs.

10/ Test method modified to include 2 millimeters insole board glued onto the specimen and conducted at -5°C.

11/ Thickness of test sample used shall equal 6.4 millimeters (0.25-inch) from test slabs.

4.4.3 End item visual examination. The end item components shall be examined for the defects listed in Table XII. The lot size shall be expressed in units of boots. The boots shall be examined with cushion insert inserted. For the pairing examination, and when determining possible differences in outersole thickness, the pair shall be examined together. During the inspection for the defects listed in Table XII, the departures from specification requirements listed in the table shall be observed and recorded. Presence of these departures shall not result in the rejection of the lot; however, the plant quality assurance and Government personnel reserve the right to establish and impose lot rejection criteria when either the severity or the presence of these departures warrants such a measure. Additional rejection criteria may be invoked at any time during the life of the contract when the Government judges this action to be in its best interest. Defects of pairing shall be classified as a single defect. Sampling for end item inspection shall be in accordance with American National Standard ANSI/ASQ ZI.4. Defects in Table XII denoted by an asterisk (“*”) shall be deemed either Major or Minor by the Government depending on the respective defect’s effect on the form, fit and function of the item.

Appearance defects shall be scored only when the condition is plainly visible at a distance of

3 feet or more and it appreciably affects item appearance.

THIS SPACE LEFT INTENTIONALLY BLANK

TABLE XII. End item components: visual defects.

Examine Defect Classification Major Minor

Pairing Not properly mated; i.e., not right and left of same size or components not consistently sized

Variation in color, luster, or appearance * * Variation of more than 1/4-inch in height of boot pair 102 Box toe malformed * * Difference in outersole thickness between left and right boots:

more than 1/16-inch but not more than 3/32-inch

Cleanness Any non-removable spot, stain, or foreign matter affecting appearance

Color and finish Color not as specified * * Leather Finish streaky, chipped, flaky or shaggy/nappy on upper Any raw edges not stained to match upper leather

Design Not as specified 104 Construction & Workmanship (general)

Any cut, tear, hole, repair or damage * Any component or assembly omitted or misplaced Operation omitted, not properly performed

Any component, assembly, or design present creating “hot spots”

Seams & Stitching (upper)

Open seam not repaired 106 Repair of open seam not as specified 205 NOTE: A seam shall be classified as open when one or more stitches joining a seam are broken, or when two or more consecutive skipped or runoff stitches occur. On multiple stitched seams, a seam is considered open when one or both sides of the seam are open. When the above conditions occur on the inside of the boot, it shall be scored as a * defect

Tight tension resulting in puckering or cutting of the leather and fabric

Stitching omitted where required * * Loose tension resulting in a loosely secured seam * * Gage of stitching irregular * * Thread ends not trimmed throughout the boot 206 Needle holes or needle chew * * Back seam malformed 207

TABLE XII. End item components: visual defects. - Continued

Vamp stitching at outersole junction

One or more rows of defective stitching not repaired 107 Stitching repaired, but first stitch more than 1/4-inch from outersole junction

Repaired with one stitch in lieu of two (2) or more stitches

Outersole Thickness not as specified 109 Edge trimming is irregular, affecting appearance 209 Any malformation * *

Eyelets/ speed laces

Number of eyelets/speed laces not as specified 110 Not the same number of eyelets/speed laces in each row

Eyelets/speed laces not properly spaced within the row or misalignment between the rows to an extent interfering with proper lacing

Any eyelet/speed lace not securely clinched 210 Any eyelet/speed lace malformed or damaged 211

Marking & instruction tag

Missing, incomplete, incorrect, not applied in the specified manner, misplaced, illegible, or not of specified content or size

Lining Torn, loose, or wrinkled * * Not properly mated with upper 213

Bar code label/tag

Bar-code omitted or not readable by scanner;

human-readable interpretation (HRI) omitted or illegible; bar-code type not as specified code density not as specified

Removable Cushion Insert

Missing, wrong size, or wrong side up 112

TABLE XII. End item components: visual defects. - Continued

Upper leather Not flesh side out Leather deeply scuffed; i.e., fiber structure damaged Grub or tick damage, scratches, brands, or bony leather Fat wrinkles or veins Stretchy vamp Thickness exceeds the maximum or less than the minimum specified Rough fiber on flesh side Off-stretch cut or Slaughter cut Excessive roughing or scouring

Leather embossed

Drainage Eyelets and washers

Components omitted Not securely clinched, or not inserted as specified

4.4.4 End item testing. The finished boot shall be tested for the characteristics listed in Table XIII. The sample sizes for all tests per lot are noted in Table XIII. For the thermal conductive heat resistance tests, the sample size shall be three (3) individual swatch packages measuring 4-inches x 6-inches shall be submitted and not have any labeling or markings attached. The swatch construction (layering) shall be identical to the assembly found in the quarter side panel area of the upper of a fully constructed boot. The assemblies shall be sewn along the outer perimeter and may be submitted in an envelope which indicates the proper identification. The swatch packages shall be taken from the same lot of the product demonstration model(s), first article, or production lot(s).

Each successful offeror will have the first three (3) production lots tested at a quality QLL laboratory capable of performing the tests as stated in the PD and as specified in the contract.

Assuming these production lots pass, the contractor(s) will submit a certificate of compliance (COC) for shock attenuation, whole boot MVTR, flame resistance, conductive heat resistance, sole heat resistance, height, and weight tests for all subsequent lots. The government reserves the right to draw samples from any lot and perform whatever tests deemed necessary at any time during the length of the contract.

TABLE XIII. End item tests.

Characteristics

Requirements

Test Method 1/

End Item Sample Size (Boots) 2/

Shock Attenuation 3.5.4 ASTM F1976 3 Bond Strength

Entire Sole to Upper Outsole to Cushion Midsole

3.5.5

3.5.5.1 4.5.2 5

3.5.5.2 4.5.1 5

Whole Boot MVTR 3.9.1 4.5.3 6 Height – Boot 3.6.2 4.4.4 5 Weight

Boot with Removable Cushion Insert

3.6.3 4.4.4 5 Thermal Protection Flame Resistance

Conductive Heat Resistance

3.9.2

3.9.2.1 4.5.4.1 3

3.9.2.2 4.5.4.2 3

Sole Heat Resistance 3.9.2.3 4.5.4.3 3 1/ Test results for each characteristic shall be reported as Pass/Fail.

2/ Test specimens shall be 10R.

4.5 Methods of inspection.

4.5.1 Bond strength test of outersole to cushion midsole.

4.5.1.1 Specimen. The specimen shall be a completed boot which has aged at least 2 days.

The outersole shall be separated from the cushion-midsole, for a distance of approximately 2-1/2 inches from the toe end of the specimen. The separation may be aided by any suitable device or machine capable of withstanding the amount of force necessary to accomplish separation. After separation, the toe cap of the boot shall be crushed to facilitate mounting of the specimen in the tester. In event that the point of separation at the 2-1/2 inch point is not between the outersole and cushion midsole, that portion of the outersole remaining adhered to the cushion midsole shall be separated manually (with the aid of a knife or other instrument), so as to show separation between the outersole and cushion midsole.

4.5.1.1 Apparatus. A power-driven adhesion machine, or an approved testing device of equal performance, shall be used. The rate of travel of the power-actuated grip shall be 2-inches per minute. The machine shall be operated with a device for maintaining maximum load indication.

4.5.1.2 Procedure. The separate toe ends of the specimen shall be clamped in the jaws of the machine. The specimen shall extend outward at right angles to the direction of the application load. The machine shall be started, and the surface being tested shall be pulled apart to a distance of not more than 4-1/2-inches from the toe. The maximum value attained during separation shall be taken as the bond strength.

4.5.2 Bond strength test of entire soling system to upper.

4.5.2.1 Specimen. The specimen shall be a completed boot which has aged at least 2 days.

The specimen shall be legibly marked on each side at two (2) points (2-inches and 4-inches from the tip of the toe). The entire soling system shall then be separated from the upper to the 2-inch mark. The separation may be aided by any suitable device or machine capable of withstanding the amount of force necessary to accomplish separation. After separation to the 2-inch mark is achieved, the toe cap of the boot shall be crushed to facilitate mounting of the specimen in the tester. In event that the point of separation at the 2-inch mark is not between the upper and the soling system, that portion of the soling system remaining adhered to the upper shall be separated manually (with the aid of a knife or other instrument), so as to show separation between leather and soling system. Care should be taken in order to be sure that the leather is not cut.

4.5.2.2 Apparatus and procedure. The apparatus for measuring soling system/upper separation shall be as described in test method ASTM D2208. The separated and crushed toe portion of the boot shall be gripped by one (1) clamp in a manner such that the minimum effective jaw surface area applied shall be 1-inch by 1-inch. The jaw surface shall be centered approximately 1/2-inch to 1-inch from the tip of the toe. The other jaw surface shall hold the overlay portion of the separated upper, and it shall not be less than 1-inch by 2 inches, with the long dimensions perpendicular to the pull of the machine. The machine shall be set in operation and the separation continued at a speed of 10-inches per minute until the outsole is separated from the upper to a point past the mark 4-inches from the tip. The maximum value attained during separation shall be taken as the bond strength.

4.5.3 Whole boot breathability. The boot breathability test shall be designed to indicate the Moisture Vapor Transmission Rate (MVTR) through the boot by means of a difference in temperature and concentration of moisture vapor between the interior and the exterior environment.

4.5.3.1 Apparatus.

a. The external test environment control system shall be capable of maintaining

23 (±1)ºC and 50 (±2) percent relative humidity throughout the test duration.

b. The weight scale shall be capable of determining weight of boots filled with water to an accuracy of (± 0.01) gram.

c. The Water Holding Bootie Insert (WHBI) shall be flexible so that it can be inserted into the boot and conform to the interior contours; it must be thin enough so that folds do not create air gaps; it must have a MVTR value ranging between 920-990 grams/meter2/24 hour. ASTM E96/E96M method B - Standard Test Methods for Water Vapor Transmission of Materials shall be used to determine acceptability (1/); and it must be waterproof so that only moisture vapor contacts the interior of the footwear product rather than liquid water. After every five (5) uses of the WHBI it will be disposed of and replaced.

d. The water circulating bath system for the boot shall be capable of controlling the temperature of the water uniformly in the boot to 35 (± 1)oC as measured in the toe area of the boot.

e. The foot form assembly used with the water circulating bath system shall have a boot plug oriented 12.5 centimeters (5-inches) as measured from the bottom of the plug surface to the inside sole in the heel area.

f. The boot plug shall be oval shaped measuring 3-inches by 2.5-inches.

g. The top of the boot shall be sealed to create an impervious barrier to both liquid water and water vapor.

h. Boots should be laced to the top of the lacing system. Allow for 1 (±0.5) inch separation between lateral and medial eyelet stays, with possible exception of the eyelets at the top of boot and boot plug area. Maximize seal security at top of boot.

i. A stationary 6-inch diameter fan shall be used to create the air current past the boot.

j. The stationary fan shall be positioned perpendicular to the test surface and raised so the center of the fan is 5-inches from the test surface.

k. The air current origin shall be 15.5-inches from the back heel edge of the boot (D).

Refer to Diagram 1.

l. The air current shall be 250 (±30) feet/minute at the heel edge of the boot (S).

Measurement shall be taken without the boot assembly in place 2-inches up from the test surface at the fan center.

D = Distance from boot heel edge to fan interface S = Wind speed at boot heel edge

DIAGRAM 1. Whole Boot Breathability Bench-top Set-Up.

1/ Determine MVTR in accordance with ASTM E96/E96M method B with the knit side of the membrane facing the water. The free stream air velocity shall be 550 (± 50) feet per minute (fpm) as measured 2-inches above the specimen. The airflow shall be measured at least 2-inches from any other surface. The test shall be run for 24 hours, and weight measurements shall be taken at only the start and completion of the test. At the start of the 24-hour test period, the air gap between the water surface and the specimen shall be 0.75 (± 0.06) inches.

4.5.3.2 Procedure.

a. Remove the removable cushion insert from the boot sample.

b. Weigh boot sample and record (this will be the unconditioned weight).

c. The boot shall be conditioned in the test environment for a minimum of 12 hours before testing.

d. Insert WHBI and foot form assembly into boot opening and fill with water preheated to 35 (±1)ºC to a height of 12.5 centimeters (5-inches) as measured from the inside sole in the heel area and seal opening with boot plug. The water should be in contact with the bottom of the boot plug.

e. Regulate water temperature in boot at 35 (±1) o C.

f. Disconnect water circulating system and weigh boot assembly and record as Wi. The water volume in system shall be noted at the time of weighing.

g. After weighing reconnect water circulating system and maintain the temperature in boot at 35 (±1)º C for 6 hours (± 5 minutes).

h. The boot assembly shall be oriented such that the boot sole lies flat on the testing surface…