1、A-A-55220 December 1 l. 1995 COMMERCIAL ITEM DESCRIPTION THREAD, PARA-ARAMID, INTERMEDIATE MODULUS The General Services Administration has authorized the use of this commercial item description as a replacement for ML-T-87128 for all Federal agencies. 1. SCOPE This comercial item description covers
2、the requirements for para-aramid, intermediate modulus thread used for machine and hand-sewing; and intended for use in items of clothing and equipage, and in air delivery and safety equipment. 2. CLASSIFICATION The thread shall be furnished as twisted, soft multiple cord (soil finish), or as the sa
3、me cord with resin finish, designated by a suffix R, or as a monocord. 3. SALIENT CHARACTERTSTICS 3.1 General descriDtion. The yarn used in the manufacture of the threads shall be a para-aramid, intermediate modulus type of the denier and ply specified in Tables I and Ia. The thread shall be waxed o
4、r have finish applied so that it shall have a smooth, dressed Beneficial comments, recommendations additions, deletions, clarifications, etc. and any data which may improve this document should be sent to: Defense Personnel Support Center, Clothing and Textiles Directorate, AITN: DPSC-FNSC, 2800 Sou
5、th 20th Street, Philadelphia, PA 19145-5099. AMSC NIA FSC 8310 DISTRIBITION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55220 surface suitable for high-speed machine sewing.
6、 If better structural integrity is desired, application of a 0.5 to 1 .O percent by weight (dry add-on) of a resinous finish such as polyvinyl butyral may be appropriate. Table I Twisted Soft Multide Cord TEX Label Approximate Ply Yards Breaking Size Denier perpound strength (minunum) (pounds) PX) (
7、minimum) 40 60 80 120 210 400 450 800 400 600 800 1200 2000 4000 4500 7500 2 10,000 14 3 6,700 23 4 5,000 30 3 3,350 45 5 2,l O0 64 4 1,050 135 3 900 150 5 550 225 TEST METHOD L/ ASTM-D 1907 Visual 21 AST“D 1907 ASTM-D 2256 NOTE: Unless otherwise specified, a certificate of compliance shall be submi
8、tted and will be acceptable for the stated requirement. Table Ia Monocord TEX Label Approximate Yards per pound Breaking strength Size Denier (minimum) (Pounw VEX) 21 200 21,500 7.5 40 400 10,750 15.0 105 1 O00 4,300 45.0 150 1500 2,875 70.0 240 2250 2,175 95.0 300 3000 1,450 130.0 TEST METHOD 1/ As
9、sm(r-D 1907 ASTM-D 1907 ASTM-D 2256 z/ Footnotes for Tables I and Ia: 1/ All test reports shall contain the individual values utilized in expressing the final result. The sample unit shall be suffcient holders to provide enough thread for the applicable 2 Provided by IHSNot for ResaleNo reproduction
10、 or networking permitted without license from IHS-,-,-A-A-55220 tests. The lot size shall be expressed in units of one holder. 21 One determination per sample unit and the result reported as pass or fail, 31 Except that capstan or drum type clamps shall be used, and five determinations shall be made
11、 per sample unit. 3.2 LabeVmarkinq. Except when commercial identification markings are specified in the invitation to bid, each holder shall have a label attached in such a manner as to remain in place and be clearly legible until all thread has been removed. The label shall be printed with the info
12、rmation as specified below: a. Weight (net) b. Letter or number designation and ply c. Nomenclature d. Contract or Purchase Order Number e. Name of contractor f. Date (month and year) 3.3 Rewlatow reauirements. The offeror1contractor is encouraged to use recovered materials to the maiimum extent pra
13、cticable, in accordance with paragraph 23.403 of the Federal Acquisition Regulations (FAR). 3.4 Toxic chemicals. hazardous substances, and ozone dedetinp chemicals (ODCs). The use of toxic chemicals, hazardous substances, or ODCs shall be avoided, whenever feasible. The SD-14 provides a readily acce
14、ssible list of toxic chemicals, hazardous substances, and ODCs. (Note: The list of toxic chemicals and hazardous substances changes. Any updates to the list will be reflected first in the Environmental Protection Agency PA Title III List of Lists EPA 560/4-92-0111.) The desired pdormance requirement
15、s should be specified rather than the specific chemical or substance. If applicable, a toxic chemical, hazardous substance, or ODC must be specified. 4. OUALITY ASSURANCE PROVISIONS 4.1 Certification. The Contractor shall certify and maintainsubstantiating evidence that the product offered meets the
16、 salient characteristics of this commercial item description and conforms to the producers own drawings, specifications, standards, and quality 3 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55220 practices. The Government reserves the right
17、 to require proof of such conformance prior to the first delivery and thereafter as rnay be otherwise provided for under the provisions of the contract. 4.2 Market acceDtance criteria. The item offered, or a generic equivalent, must have been sold to the commercial market or to the Government for at
18、 least two years. 4.3 AcceDtance criteria. Acceptance shall be as specified in the contract or purchase order. 4.4 Warranty. The item offered shall include the standard warranty given to the commercial market beginning with the date of delivery of the individual items. 4.5 Visual Examination. The th
19、read shall be examined on the tube for the defects listed in Table IT. Table II. Defects of thread Examine Defect on tubes Type of holder Other than specified. Surface condition Cut, tear, chafe, slip, affecting strength of thread or interfering with easy location of end and initial unwinding. Clean
20、liness Dirt, spot, or stain clearly noticeable. Finish Other than specified. Continuous length Not in continuous lengths. Knots Size FF and finer thread shall average not more than one thread knot per two ounces, and size 3 and heavier thread shall average not more than one thread knot per four ounc
21、es. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55220 Table II. Defects of thread (contd) Examine Defect on tubes Winding Improperly or not firmly wound, resulting in kinks, knots, entangling or slippage during unwinding or otherwise affectin
22、g unwinding of thread. Tackiness or adhesion Strands adhere to each other or to holder affecting unwinding tension. 4.6 Put-un Unless otherwise specified, the thread shall be wound on commercial spools, cones, or tubes as specified in the contract or purchase order. 5. PACKAGING 5.1 Preservation, Pa
23、cking, and Marking. The Preservation, packing, and marking shall be as specified in the contract or purchase order. 6. NOTES 6.1 Source of Government documents. Copies of Military and Federal documents are available from: Standardization Documents Order Desk 700 Robbins Avenue Bldg. 4D Philadelphia,
24、 PA 19 1 1 1-5094 6.2 Source of non-Government documents. ASTM Tests Methods (Applications for copies should be addressed to American Society For Testing and Materials, 1 O0 Harbor Drive, West Conshohocken, PA 19428-2959.) Custodian: Air Force - 99 Review Activities: Air Force - 32,45,82 Civil Agency Coordinating Activity: - GSA-FSS Preparing Activity: DLA - CT Project Number: 8310-0192 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
