MIL-W-5664D.pdf

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~ MIL-W-5664CL-;,.: ._::-. :

-—-— ,. 17 AUGUST 1971

MILITARY SPECIFICATION.

WEBBING, TEXTILE, ELASTIC

This specification is approved for use by all Departments and Agencies of the Department of Defense.

1. SCOPE

1.1 Scope. This specification covers requirements for elastic webbings used in aviator and ground combat clothing and equipment.

1.2 Classification. The webbing shall be furnished i’nthe,following types as speci.fied..(see6..2)..’’Theclasses and widths shall b.eas.specified (see 6.2”)and as indicated in Table I.

Type I - Cotton fiber Type 11 - NylorIfiber

2. APPLICABLE DOCUMENTS 4

2.1 Governrnent documents

t . ..’

2.1.1 Speci,fications”and standards. .The following specifications and standards form a part of”this specification.to the extent specified herein.

Unless otherwise specified, the issues of these doc.ume.nts:shallbe those listed in ttie’’issue of the Department of Defense Index ’ofSpecifications and .

Standards (DOQISS) and supplement thereto, cited, i:nthesolicitation.

SPECIFICATIONS

MILITARY .’

MIL-W-43334 - Webbing and Tape, Textile, Packagingof

,,-,1>~

Beneficial .comments (recommendations, additions, deletions) and any pertinent data whichmay be of use in improving this document should be addressed, to: “:; ;.

Systems/Engineering and Standardiz.ation Department (Code”93), Naval Air Enginee.ring.Cen.ter, Lakehurst, NJ 08733-5100; by using”t~e self-addressed” Standardization .Document Improvement Proposal’(DD Form 1’426) appearing”at the ‘“’‘(’;-

-end of .thik’~ocument,or’by letter. , ‘, ‘,:. !, ,,.J:-... ,,... . “’..’.,~--... ‘.

AMSC N/A ““ ‘“’’” FSC 8305

DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

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M~L-W-5-664D

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4. ,.

,. ‘STANDARDS —

FEDERAL

FED-STD-191 - Textile Test Methods FED-STD-601 - Rubber, Sampling and Testing

MILITARY

MIL-STD-105 -’ Sampling Procedures and Tables for Inspection by Attributes

2.1.2 Other Government documents. The following other Government document forms a part of this specification to the extent specified herein. Unless otherwise specified, the issue shall be that in effect on the date of the solicitation.

Rules and Regulations Under Textile Fiber Products Identification Act

(Copies of specifications, standards, and other Government documents required by contractors in connection-with specific acquisition functions should be obtained from the contracting acfi,vity or as directed by the contracting activity.) .

2.2 Other publ-ications.=-The following document forms a part of.this specification to the extent specified herein. Unless otherwise specified, the” issues of the documents which are DOD adopted shall be those listed in the issue of “the”DOOISS specified in the solicitation,. Unless otherwise” specified, the issues of documents not listed in the DODISS shallbe the issue of the ”nongovernment document which is current on the date,of the solicitation.

AMERICAN SOCIETY FOR TESTING AN6 MATERIALS (ASTM) <

ASTM D 3951 - Standard Practice.ftir Commercial Packaging

(Application for copies should be addressed to the American Society for ‘“ Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.)” ●

(Nongovernment standards and other publication.snare normally available, from the organizations which prepare or which distribute the documents. These documents also may. be available in or through libraries or other informational services,)

2.3 Order of precedence. In the event of a conflict between thetext’of this ”specification. and the references cited herein (except for associated

. detail specifications, specifi,cation sheets or MS standards?, the,text,of th:,.

specification shall take precedence. Nothing in this specifi cation,’ however shall supersede appllcabl.e lawsand regulations unless a specific exemption has been obtziined.. , ;

3. REQUIREMENTS :.. v - , .>. ”

3.1 F’lrstarti-cle.’“.Whenspecified inthe contract .or-purchase order, a sample shall be’’.ubjectetd.t”tofirst article Inspection (see 4.4 and6.3)i, b s

MI’L-N-566dD ,--’.

3.2 Materi{l.

I

3.2.1 Cotton yarn. The yarn used in the manufacture of the cotton elastic webbing shall be of a grade and staple length which will meet the requirements of this specification.

3.2.2 Nylon yarn. The yarn used in the manufacture of the nylon elastic webbing shall be a bright, high tenacity, light and heat resistant polyamide prepared from hexamethylene diamine and adipi;@~acid and its derivatives’. The yarn shall not be bleached. The yarn shall have a nominal size of 20/2 cotton count. Testing shall be as specified in 4.7.

3.3 Webbing pro~erties. The class, type, width, thickness, weight, and elongation requirements of the webbing shall be as shown in Table I.

TABLE I

Class

‘3

Hidth (inches)

3/8 =“1/32 1/22 1/16 3/4= 1/16 7/8 = 1/16 1 x 1/16 1-1/2 = 1/16 2 ~ 1/16 2-1/2 = 1/16

1-1/2 ~ 1/16 1-1/2 t 1/16

Thickness Ounces per range linear yard (inches) (max, weight)

.016-.046 0.28

.016-.046 0.38

.016-.046 0.53 “

.016-.046 0.55

.016-.046’ ‘0.73

.016-.04$

.031-.O6’1 .

1.00

1.60 ‘

.031.-.061 2.00 “’.”

.094-.156 .;““ : 2“.30

.094-.15,6 . . ‘2.35

TYPE II

TO produce 50% elongation, load range at room temperature (poun’ds)

1.15-3.25 1.j5_3.75 1.80-5.00 0.90-4.37 3.00-5.50 5.00-7.00 6.00-11.00 8.00-12.00

7.20-17.50 15.30-31.25

1 1 2 1/16” .030-.060 0.80 3.00-6.00 1-1/2 =’1/16 .030-.60 1.20 4.00-7.50

, I

3.3:1 Weave construction. Unless otherwise specifiedby the procuring activity, the weave for all classes except Class 1, 1,-inchwidth and 1-1/2 inch,width, for both types., shall be with one filling yarn’ per shed. Class 1,, l-inch width,’and 1-1/2 inch ’width, for both type;, may besupplied”in a..

shuttle or shuttleless loom construction. (see 6.2.1) :. ‘,

3.4 Dr{ft.The”d riftof the load on the webbing~’ elongated ”aridmaintained ‘ at 50 percent elongation for 4 hours, shall be not more,,thafl20 percent when’ . .

the drift”test ii.perfotmed’as specified in 4.7.2. .’ “ ‘

3.

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3.5 Tension set. After the webbing has been elongated and maintained at 50 percent elongation for 10 minutes and then allowed to relax for 10 minutes, the webbing tension set (change in length of the sample) shall be not more than 5 percent.

3.5.1 After heat aging. After the webbing has been heat aged at 70” ? l°C (158° * 2“F) for 7 days, and after at least 3 hours from the time of of 3.5.

3.6 load at than 20 (-40° 2 removal from the aging oven, it shall meet the tension set requirement

Low temperature elongation resistance. For Class 1 and 2 webbings the 50 percent elongation at 21° z 2.8°C (70° = 5’F) shail be not lesj percent of,the load at 50 percent elongation at -~0° z 2.8°C S°F). For Class 3 webbing the value shall be not less than

40 percent.

3.7 Color, The color of Type I shall be as specified (see 6.2). Type II shall be Olive Green 106.

3.7.1 Color matching. The dyed webbing shall match. the standard sample when viewed under filtered tungsten lamps which approximate artifical daylight having a correlated color” temperature of 7000 ~ 500 K, with illumination of 100 + 20=;fo.otcandles, and shall be a good match .to...thstandardrdsample under... __..

incandescent lamplight at 2300 ~ 100 K.

3.8, Colorfastness. Unless otherwise specified, colored webbing shall show good fastness to 20 standard fading hours ofl”ight, water, laundering, perspiration, and crocking. Black webbing shall show fai’r fastness to”wet crocking. (see 4.7). *. {

3.9’ “~. The pH value of the water extract of the dyed webbing shall be no less than 5.0 nor more than 8.5 when testedas specified in 4.7

3.10 Length and put-up. Unless otherwise specified, when the webbing furnished isone inch or less in width, it shall be furnished-on fiberboard spools containing 120 to 130 yards with not more than 6 pieces per roll. No piece shall be less than 2,yards in length. When ttte.,webbingfurnished is over ol-e-””inchin width, it shall be furnished on fiberboard spools containing 45 to 55 yards with not more than 3 t)ieces Der roll. No ~iece shall be less than 10 y~rds in length. All ends shall be’joined together or seying. ; .,..:, 3.1?- Identification label. Each spool of”webbing shall.

iden,tlfi,cationlabel attached to the head end of the$p,~l, ‘ MIL-W-43334.’” ,, 2.

either by pinning have an n accordance with

.3.12Fiber Identification.. Each spool;of webbin,g,shall be labeled, ticketed-j or invoiced for fiber content in accordance;with the Textile Fiber Products Identification Act. . . . . . )

3.13 Workmanship. The f.inished,webbing shall conforri.to the quality and” grade of ’product established by this specifi”catlon.The”occurrence of defects shallnot”exceed’ the applicable acceptable quality levels.

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I

4.1 Respons:biiitj for insoect~on. LJniess otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as Jpecified herein. Except iijotherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirement specified herein, unless disapproved !Jythe Government. The Government reserves the right tO perform any cf the inspections set forth in the specification Iwhere such ~nspections are deeme5 necessary to assure supplies and services conform to prescribed requirements.

4.i.l Responsibility for compliance. All items must meet all requirements of section 3 ~nd 5. The inspection set forth in this specification shall become a part of the contrac~or’s overall inspection system or quality program. The absence of any inspection requirements in the specification shail not relieve the contractor of the.responsibility of assuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling in quality conformance does not authorize submission of known defective material, either indicated or actual, nor aoes it commit the Government to acceptance of defective material.

4.2 Classification ofinspectlons. The inspection requirements specified herein are classified as follows:

a. First article inspection (see 4.4)

b. Quality conformance inspection (see 4.S)

4.3 Inspection conditions. Unless otherwise specified, all inspections shall be performed in accordance wi’th the.test conditions specified in 4.4.

4.4 First article inspection. The first article sample specified in 3.1 shall be inspected for all the reauiiements of this specification except for length (4.6.1.3) and preparat~on for delivery (4.6.2).

4.5 Quality conformance inspections. The quality conformance inspection shall consist of the examinations described in 4.6.1 through 4.6.3 and the testing of the end item in 4.7.

4.6 Inspection. Sampling for inspection shall be performed in accordance with MIL-STD–105, except where otherwise indicated hereinafter.

4.6.1 End item examination. Defects found during the examination shall be classified in accordance with 4.6.1.1, 4.6.1.2 and 4.6.1.3.

4.6.1.1 Yard-by-yard examination. The required yardage of each piece shall be insDected on both sides and visual ”defects classified as listed In Table II. Ail defects found shall be counted regardless of their proximity to each other, except where two or more defects represent a single local condition of the webbing, in which case only the more serious defect shall be -counted. A continuous defect shall be counted as one defect for each warpwise yard or fraction thereof in which it occurs. The sample unit for this e-xamination shall be one linear yard. The sample size shall be in accordance with level II of MIL-STG-!05. The acceptab’:: -’?~~*:/ lP:; (AQL) shall be 2.5 major defects and 6.5 minor defects per 100 units (yards). The lot size shall “be expressed in units of one linear yard each. An approximately equal number of yards shall be examined from each spool selected. The number of spools from which the sanp;e is to be selected shall be in accordance with Table 1“11 of this specification.

TABLE 11

CLASSIFIC.ATION OF DEFECTS

EXAMINE

Abrasion mark

Broken or missing end

Broken or missing pick

Coarse filling bars

Crease or wrinkle

Cut, hole, tear

Double end

Drop-ply

Dropped stitch on knittededge

Edge cut or frayed

Edge beaded or corded

DEFECTS

Resulting in rupture of individual yarns or plies, ‘distortion in the arienta.tion of threads, dimensional distortion, areas visibly thinner than adjoining unaffected areas

4ny

2 or more within a linear inch, regardless of the size of missing portion Single, missing for more than 1/4 inch

Yarn larger ’in diameter than in’ad-joining unaffected area resulting in incrqased stiffness.’or thickness ~/

Twisted or distorted. Will not lay flat upon application of manual pressure

Any cut, hole, or tear

Resulting from wrong draw (see “Wrong draw”)

Clearly visible, or more than 2 ends within same length and extending over 9 linear in. or more ~/

Any (shuttleless loom construction)

Clearly visible ~/

Visible increase in thickness or mis-formed selvage ]/

MAJOR

x x x x x x x

MINOR

x x x’ x

EXAMINE

Edge folded or rollec

Edge ~OOpy

Edge loose

Edge tight

Edge scalloped

Fine or light filling bar

Float

Identification label

Heavy filling bar, heavy place

Hitch-back, crack, open place

Jerked-in filling, slough off

Kinks

TABLE 11 (concinue’d)

CLASSIFICATION OF DEFECTS

DEFECTS

(See “Crease”)

Forming clearly j:s:ble :filling loops or Edges tied loosely to body for 2 linear inches or mere ~/

Resulting in waviness, distortion in orientation of fiiling, or looseness

?esulting in visible tension along ~dge, or pucker, waviness, bagginess or slackness that cannot be flattened 9y manual pressure ~/

4ny visible indentation of edge ~/

Clearly visible ~/

‘4ultiple, 1/2 inch or more in com-bined warp dnd filling directions, or single floating over more than 1 inch qultiple, less than 1/2 inch in com-bined warp and filling directions, or single, float-over more than 1/2 inch but not more than 1 inch if in warp, Over more than 1/4 of the width but not more than 1 inch if in filling

$lissing, incomplete, incorrect illegible or insecurely attached

Visibly stiffer or thicker than ad-joining unaffected area ~/

Clearly visible opening between ad-joining picks, or warpwise tension area over part of the width, result-ing in light or heavy places ~/

Clearly visible ~/ dore than 3 in any 9 linear inches, :learly visible on surface

MAJOR

x x x

MINOR

x x x x x x x x x

. . ... MIL=H-566W,.

TABLE II (continued) “,“

CLASSIFICATION OF DEFECTS

EXAMINE DEFECTS MAJOR MINOR

Knots More than 1 knot x Untrimmed ends extending from surface x

Mispick, skips Resulting in width-wise repeated x floats more than 1/4 inch long Resulting in abrupt break in se- x quence of weave, or width-wise re-peated floats 1/4 inch or less lcng

Mixed filling, shade Clearly visible ~f x bar

Slack end 2 .ormore in same length, jerked-in x between picks, or forming clearly visible loops on surface ~/ Single, jerked-in between picks, or x formirl~ ~C&tlJ ,JL~- lU.-P.~ surface ~/

Slub or slug More than twice the thickness of the x yarn (or ply,.ifplied) , Spot, stain, streak Any uncleaned spot, stain, or streak x (rust, dirt, oil, cl,ear.lyvisible ~/..”” grease, dye)

Smash Any smash x

Tight end Clearly visible ~/ x

Tight pick or filling Resulting in rolling (see also “Edges x scalloped”)

Wavy or ridgy Clearly visible, will not flatten x under manual pressure (resulting from uneven tension) ~/

Weak or tender spot Any x

Wrong drtiaw Extending over 9 linear inches or x more

Yarns (filling) Two yarns per shed (except shuttle- X less loom construction). . .. . . , 1/ The term “clearly visible” shall be Interpreted as meaning clearly— visible at normal examinatifl- distance (approximately 3 feet).

. . . ,. MIL-!’J-566Llc

4.6.1.2 Overall examination. Each defect listed below shall be counted no pore than once in each spool examined. The sample unit for this examination shall be as shown in Table 111.

Defects

Uncleanliness throughout Uneven weaving throughout Shade (when other than natural):

Off shade Poor penetration ~~~~;g~’ ~lcudy ~~ ~t~~~~.y thr~ug!lcut

Not labeled in accordance with Textile fiber Products Identification Act

Pieces not joined by either being pinned or sewed

TA6LE 111

SAMPLE SIZE

Maximum number of overall Sample Size defects acceptable in

Lot size (spools) (spools) sample (see 4.6.2.2 & 4.6.2.3.1) 500r less 2 0 51 up to and including 500 8 1 501 and over 13 2

4.6.1.3 Length examination.

8 {

4.6. 1.3.1 Examination for length of individual spool. Each spool in the sample shall be examined for the defects listed below. The sample unit for this examination shall be one,spool. The s,ample size and acceptance number shall be as shown in Table 111.

Defects

Gross length less than specified minimum lengthor more than specified maximum length

Gross length more than 2 yards less than gross length marked on roll label

4.6.1 .3.2 Examination for total yardage in sample. The lot shall be unacceptable if the total of the actual gross length of spools in the sample Is less than the total of the gross lengths marked on labels.

4.6.2 Examination of preparation for delivery requirements. An examination shall be made in accordance with the provisions of MIL-W-43334 to determine that packaging, packing and marking comply with the section 5 requirements of this specification.

.“, ,’$ lMIL-1{-566~D.

4.6.3 Examination for filling yarns per shed. Except for Class 1, l-inch :~idth and 1-1/2 inch ‘width, the lot “shall be unacceptable if any roll in the sampie contains more than one filling per shed.

4.7 Testinq of the end item.. The methods ,of testing specified in FED_$TD_Igl, wherever applicable and as listed in Table IV shall be followed.

The physical and chemicai values specified in Section 3 apply to the average of the determinations made on a sample unit for test purpo~es as specified in the applicable test methods. Except as otherwise specified, all tests shall be performed under standard conditions in accordance with FED-STD-191. All test reports shall contain the individual values utilized in expressing the finai result. The s;m~le SiZ~ sFIallbe j! ‘LII: ~:

Lot size (yards) ‘ Sample size

800 or less 2 801 up to and including 22,000 3 22,001 and over 5

The lot shall be unacceptable if one or more units fail to meet any requirement specified. The lot size shall be expressed in units of 1 linear yard. The sample unit for testing shall be 5 yards of webbing.

TABLE IV

STANDARD TESTS

FED-STD-191 FE!)-STD-601

Characteristic Method No. Method No.

ilidth 8 5020 4

Thickness 5030 ~1 Weight .,..5041 Tension set “ . .... 4411 ~/

Colorfastness to:

Light of 20 std fading hrs 5660 Water 5630 Laundering 5614 Perspiration 5680 Crocking 5651 pH 2811

Material identification 3/

‘~/ Except that a 6-ounce total load shall be applied, and the pressure foot diameter shall be 3/8 inch.

~1 Specimens shall be full-width. Elongation shall be 50 percent.

~1 Unless otherwise specified, a certificate of compliance indicating the nylon yarn complies with the requirements of 3.2.2 shall be submitted and will be acceptable.

d

MIL-W-5664D:.,-. ~..,.

4;7.1 Elongation. Specimens for the test shall be full-w inches long, and shall be marked with a 2-inch gage length so when the sc)ecimen is inserted in the jaws of a suita~le testll dth at least 6 located that q machine, -having jaws wider than the webbing, the gage length is centraliy locatea between the jaws. The initial distance between the jaws of the machine shall be 3 inches. The jaws shall separate at a rate of 12 inches per minute under no load. The load required to produce 50-percent elongation of the 2-inch gage spec math unit length shall be noted’.

7.2 Drift. The specimen shall be assembled in the testing machine as.

fieci in 4.7, (Tne jaws shall be disengaged with a pendulum type fie). The jaws shall be separated at the rate of 12 inches per minute 1 50~oercent elongation is reached. Jaw separation shall be s-opped and

After 4 ned as

~fi~ ;~~a ~fi&;;~~ rsc~~d?d 15 seconds after the instant of stooping hours, the lead shall be recorded again. The drift shall be determ follows:

Drift, percent = a - b x 100 a

Where: a = load reading at start of test period b = load reading at end of test period

4.7.3 Tension set after heat aging. The full-width webbing specimens shall be subjected to a temperature of 70° * l°C (158° = 2“F) in a circulated dry air oven for 7 days. In not less than 3 hours after removal from the heat aging oven, specimens shall be subjected to an elongation of 50 percent ’for 10 minutes, allowed to rest for .10 minutes, and then the tension set shall be determined in accordance with Method 4411 of FED-STD-601.

4.7.4 Low temperature elongati~n resistance. The ’webbing specimens shall be conditioned in a cold chamber for 5 hours at -40° t 2-8°C (-40° ~ 5°F”) and the load required to produce 50 percent elongation shall be determined in ~ the same manner as 4.7.1; Tests shall be’’conducted in triplicate and the results averaged. Low temperature elongation resistance in percent shall be calculated as follows: s

Low Temperature Elongation Resistance, percent = & x 100 b

Where : a = load to produce 50 percent elongation at 21° * l°C (70° t 2“F) b = load to produce 50 percent elongation at -40” a 2.8°C (-40° ~ 5°F)

4.7.5 Weave. The weave construction shall be determined

examination.

by visual”

MIL-W-5664D

“5. PACKAGING

5.1 Preservation. Preservation shall be level A, B or Commercial as ‘specified (see 6.2).

5.1.1 Leve?s A, 8 . Nebbing, put up as specified, shall be preserved in accordance with the applicable requirements of MIL-W-43334.

5.1.2 Commercial. Webbing, put up as specified, shall be preserved in accordance with the applicable requirements of ASTM D 3951.

5.2 Packing. Packing shail be level A, B or Commercial as specified (see F.??

5.2.1 Levels A, B. Nehbing shall be packed in accordance with the applicable requirements of MIL-w-43334.

5.2.2 Commercial. Nebbing shall be packed in accordance with the applicable requirements of ASTM D 3951.

5.3 Palletization. When required, palletization shall be in accordance with the applicable requirements of MIL-N-43334.

5.4 Marking. In addition to any special marking required by the contract or order (see 6.2), shipments shall be marked in accordance with MIL-W-43334.

6. NOTES.

6.1 Intended use. The elastic webbings covered by this specification are intended for the following uses:

Class I (

Intended Use

1 Htadbands for avi’ators’ face masks and goggles, parachute packs and harnesses, service cap covers, gloves, waist bands, and for harness elastic on gas mask face pieces.

2 Suspenders.

3 Parachute packs and rip-cord grip pocket for parachutes.

6.2 Ordering data. Purchasers should exercise any desired options offered !?erain, aridprocurement documents should specify the following:

6.2.1 Procurement requirements.

(a) Title, number and date of this specification.

(b) Type and Class (see Table I).

(c) Width (see Table I).

d

.,‘, .“, MIL-W-5664D,;.. t

(d) Weave construction (see 3.3.1). “

(e) Color (see 3.7).

(f) Quantity

(g) Colorfastness requirements, if other than as specified in 3.8.

(h) Length and put-up, if other than as specified in 3.10.

(i) Selection of applicable level of packaging and packing (see 5.1 and 5.2).

(j) When first article is required (see 3.1, 4.4, 6.3).

(k) When palletization is required (see 5.3).

6.3 First article. When a first article inspection is requirea, the item should be a first production item. The first article should consist of five yards of’the elastic webbing specified in the contract or order. The contracting officer should include specific instructions in acquisition documents regarding arrangements for examinations, approval of first articles and disposition of first articles. Invitations for bids should provide that Government reserves the right to waive the requirements for samples for first article inspection to those bidders offering a product which has been previously acquired or tested by the Government! and that bidders offering such products, who wish to rely on such production or test, must furnish evidence with the bid that prior Government approval is presently appropriate for the pending contract.

6.4 subject term (keyword) list’ing.

Aviator clothing qnd equipment..’””, Cotton fiber Elastic First article Ground combat clothing and equipment Textile Webbing

6.5 Changes from previous issue. Asterisks (or vertical lines) are not used in this revision to identify changes with respect to the previous issue due to the extensiveness of the changes.

Custodians: Preparing Activity:

Army - GL Navy -.AS Navy - AS (Project No. 8305-0106) Air Force - 99

Review Interests:

Army - MD Air Force - 11, 82

Gser- illieresi:

Army - S14 ‘Navy - MC d