DLA A-A-50198 A-2000 THREAD GIMP COTTON BUTTONHOLE《钮扣孔粗细棉金属丝做芯的线》.pdf
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1、A-A-50 198A June 21,2000 use in improving this document should be addressed to: Defense Supply Center Philadelphia, Clothing and Textiles Directorate, Attn.: DSCP-COCT, 700 Robbins Ave., Philadelphia PA, 191 1 1-5092. Superseding A-A-50 198 June 30,1989 COMMERCIAL ITEM DESCRIPTION THREAD, GIMP, COTT
2、ON, BUTTONHOLE The General Services Administration has authorized the use of this commercial item description in preference to Federal Specification V-T-280. 1 SCOPE. This document covers thread intended for use as the reinforcing cord for eyelet-end buttonholes. 2. CLASSIFICATION The thread shall b
3、e in the following types. 2.1 Type. Soft Finish - The thread shall have no consistency or luster not inherent to the cotton fiber. Glazed Finish - The thread shall be polished and lustrous, with a smooth surface having no protruding fibers. 3 SALIENT CHARACTERISTICS 3.1 a soft or a glazed finish as
4、specified in the applicable end item specification or procurement document. The direction of the final twist shall be Y, unless otherwise specified. The thread shall have an average of not more than one thread knot or splice per 500 yards. General description. The thread shall be made from cotton an
5、d shall have AMSC NIA FSC 8310 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited Licensed by Information Handling ServicesA-A-5 1098A 3.2 Physical requirements of thread The thread shall conform to the physical requirements specified in Table I. TABLE I Physical requir
6、ements Tex soft 210 270 350 180 210 300 350 Glazed Breaking Strength lbs. min Test Method 6.5 9.0 11.3 6.8 6.8 9.4 11.8 ASTM-D-204 ASTM-D-204 ASTM-D-204 ASTM-D-204 u21 ASTM-D-204 ASTM-D-204 ASTM-D-204 - 11 Testing speed shall be 122 0.5 idmin., and a 10 inch gauge length shall be used. - 21 Five det
7、erminations per sample unit. 3.3 Color. The color shall be as specified in the applicable end item specification or in the contract order, or will be a good (good is defined as a perceptible not appreciable difference in color) match to the base cloth of the end item. The color of the thread may be
8、an acceptable commercial component if it is not matched to the base cloth of the end item. 3.4 Colorfastness. The colorfastness of dyed finished thread shall be as specified in the applicable end item specification or as set forth in the contract except that when requirements are not stated or refer
9、enced to a standard sample for colorfastness, the thread shall be in accordance with commercial practices. When a standard is referenced, the thread shall be “equal to or better than the standard sample” for the specified requirement. 3.5 Finishing materials No chemical finishes or treatments shall
10、be applied for the purpose of increasing the breaking strength. The finished thread shall have no chemical finishes or treatments other than those commonly used on commercial threads which have been demonstrated to have no deleterious effects on the cotton fiber, including effects in prolonged stora
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- DLAAA50198A2000THREADGIMPCOTTONBUTTONHOLE 钮扣 粗细 金属丝 PDF
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