1、. This specification is mandatory for use by all Departments and .Agencies . . . of. the Department - bf Defense. 1. SCOPE 1.1 Scope .- This specif icatidn covers requirements for solid braided nylon cord. - -. ._. . L 1.2 Classification.- The .cord shall be braided in the size (diameter) .- I_ i_ -
2、 . specified (see table I and 6.2)4 *! . . 2. APPLICABLG DOrnBNTS . .2.1 The following documents, of the iss.= n effect on date of invitation for bids or request for proposal, form a part of this specification to the - - “ . .- -.r =- i. “ . . .-. _. :.- _. .- . - . extent specified herein: : 5: _-
3、SPECIFICATIONS. . _.- -1 -. . - FEDERAL _. UU-T-81 - Tags, Shipping and Stock .- c: . - e. . -. ; 1 -.f “ * ._ .“ . “ e , - .- .“ MILITARY c i:-; -. . . . “ MIL-C-3131 - Cordage; Preparation for Delivery of FED-STD-191 - Textile,;Test Methods MILITARY MIL-STD-105 - Sampling Procedures and Tables for
4、 Inspection by Attributes FSC 4020 “ t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-“. - . . - . _. . MIL-C-43307B .- (Copies of specifications, standards and drawings required by euppllers in connection with specific prdcureuknt functions should
5、be obtained frdm the $rocurng actfvity or as ditected by the conttactlrig officer.) . -. -. . -. .,.c v- ,. - . . . .- - :. I . I -. - 3. REQUIREMENTS . 331 Government and supplier purchases. - The requirements specified in 3.6 and 3.7 apply only to cord purchased directly by the Government. :All ot
6、her requirements apply to cord purchased by a supplier as a component for ari end tem and.to.cord purchased directly by the GoFrnment. 3.2 Standard sample.- The cord shall match the standard sample for shade . and shall be equal to or better thn the-standard sample with respect to all . characterist
7、ics for which the standard sample is referenced (see 6.3) . * 3.3 Material.- The yarn used in the fabrication of the cord shall be a _Y. .- bright, multi-filament nylon yairn: 3.4 -Construction and physical requirements.- The cord shall be of.solid _- braid construction (see 6.4) and the natural or
8、dyed- cord shall conform to the requirements specified in table I when tested as specified in 4.2.5. TABLE 1.- Physical requirements Dianteter Number B feaking . Length per (size) of s trqgth. . pound + - 1/64 8 t rands pounds feet inches (minimum) (minimum) (minimum) 3/ 32 9 250 380 -1/8 .9 400 22
9、o 5/ 32 12 1540 . 244 3/16 12 . 720 . .99 7/32 -12 900 I 72 114 12 1100 57 5 116 -12 1900 36 . 3/8 12 2700 24 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-LI3307B LI0 m 77777Ob OLObbOO O m 3.5.1 Colorfagfness .- The dyed cord shall show fast
10、ness -to weathering equal to or better than the standard sample when. tested as specified in 4.2.5 When no standard sample has been established the dyed cord shall show good fastness to weathering when tested as Specif$ed.Zn 4.2.5. . 3.6 Put-up and length. - Unless otherwise specified isee 6.2), the
11、- cord shall be furnished without knots or splices on apoos .(reels) in the minimum lengths specified in table II. Each spool (reel) shall contain no more than three pieces and no piece shall l 1/ One determination shall.be made per sample unit and the results shall be -. - reported as pass or fail.
12、 2/ .The time of- exposure shall be 40 standard fading hours, * 4.2 .S .1 Determination of color matching. - The shade of the dyed cord shall match the standard sample under natural (north sky) daylight or artificial daylight having a color temperature of 7500“ Kelvin and shall be a good approxi- ma
13、tion to the standard sample under incandescent lamplight. at 2800“ Kelvin (see 6.3). 5.1 .Packaging.- Packaging shall be level A or C as specified -(see 6.2). gr: F? 5.1.1 Levels A and C .- Cord shall be packaged in accordance with the . &: applicable requirements of MIL-03131. . f 5.2 Packing. - Pa
14、cking shall be level A, B or C as specdfied (see 6.2) . 5.2 1 Levels A, B and C.- Card shall be packed in accordance with the applicable requirements of MIL-C-3131. .- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-: . . . 6.4 Suppliers may use fSll
15、er core yarns in the construction of the cord as .Long as the finished cord .is constructed to form a round, e-n, sdlid cord . -I.- . . . -_ “ confo-ng +o all ckher specified requirements L _r .- .- : - .6.5 .hrginal 5dektification:- The margins of this .specification are marked with an asterisk to
16、indicate where changes (additions, modifications, correctlions deletions) from the previous issue were made. This was done as a-convenience . only and the Government assumes no liabiligy whatsoever for any inaccuracies An these notations. Bidders and auppliers.are cautioned to evaluate the require- ments of this document based on the entire content .i,rrespectdve .of the marginal . notations and relationship to the last previous issue. . _. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
