GSA A-A-131 B-1997 RUBBER BANDS《橡胶圈》.pdf
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1、 m 9999974 O254827 537 = J Metric November 25. 1997 Superseding November 17,1988 A-A-131B A-A-131A COMMERCIAL ITEM DESCRIPTION RUBBER BANDS The General Services Administration has authorized the use of this commercial item description by ail federal agencies. 1. ScoPe: This Commercial Item Descripti
2、on covers natural, synthetic, or synthetic natural rubber bands which are used in an office environment. 2. Salient Characteristics: The rubber bands shall be compounded from natural rubber, synthetic rubber (SBR), or synthetic natural rubber (polyisoprene), or any mixture of the three. 2.1 The unit
3、 weight shall be O. 113 kg (U4 Ib.) or 0.454 kg (1 lb.), as specified in the contract or order. 2.2 The number of rubber bands per pound for each size band shall be as specified in Table 1 and tested in accordance with ASTM D 412. 2.3 The inside length shall be as specified in Table 1. when tested i
4、n accordance with Section 3. 2.4 The rubber bands shall meet the requirements specified in Table II. 2.5 The rubber bands shall have no objectionable odor 2.6 Workmanship. The rubber bands shall be free from ragged and nicked edges and other defects which may affect appearance or might affect servic
5、eability. 3. Remlatorv Requirements: The offerer/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). Beneficial comments, recommendations, additions, deletions, clarifications, etc. an
6、d any data which may improve this document should be sent to General Services Administration, Federal Supply Service, Engineering Branch, 26 Federal Plaza, New York, NY 10278. FSC 7510 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i. Sizes Tensile
7、Strength Breaking Force Ultimate Tensile set, min (p.si.) min N (lbs) Elongation max % kg/cm 2 min % 8 through 19 .691N (5) 700 15 1.66N (12) 700 15 12 E! 84.4 (1,200) 3.32N (24) 700 15 A-A-131B Table I. She Designation, Count and Inside Length Size Number Number of Bands Inside Length per pound (mi
8、n) cm(inch) 8 7,300 2.22 (7/8) +/- .159 (1/16) 10 5,200 3.17 (1 1/4) +/- .159 (1/16) 11 4,050 3.81 (1 1/2) +/- .258 (3/32) 16 2,300 6.35 (2 1/2) +/- .317 (1/8) 18 1,900 7.62 (3) +/- .397 (5/32) 19 1,700 8.89 (3 1/2) +/- .476 (3/16) 32 950 7.62 (3) +/- .397 (5/32) 33 850 8.89 (3 1/2) +/- .476 (3/16)
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