1、AMSC N/A FSC 4020 INCH POUND MIL-DTL-713F 8 JULY 2009 SUPERSEDING MIL-T-713E 14 June 1977 DETAIL SPECIFICATION TWINE, FIBROUS: IMPREGNATED, LACING AND TYING This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification cov
2、ers the requirements of twine suitable for lacing and tying (see 6.1). 1.2 Classification. The twine will be of the following types, treatments, and classes as specified (see 6.2). Type N, waxed - Vegetable fiber Type P, unwaxed - Polyamide (nylon) Type P, waxed - Polyamide (nylon) Class 1 - 70 poun
3、ds minimum breaking strength Class 2 - 48 pounds minimum breaking strength Class 3 - 32 pounds minimum breaking strength 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in section 3, 4, or 5 of this standard. This section does not include documents cited in ot
4、her sections of this standard or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this standard, wh
5、ether or not they are listed. Comments, suggestions, or questions on this document should be addressed to Defense Supply Center Philadelphia, ATTN: DSCP-NASA, 700 Robbins Avenue, Philadelphia, PA 19111-5096 or email to dscpg&inspeccommentsdla.mil. Since contact information can change, you may want t
6、o verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-713F 22.2 Government documents. 2.2.1 Specifications, standards, and handbooks. T
7、he following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL STANDARDS FED-STD-191 - Textile Test Methods DEPARTMENT OF DEFENSE SPE
8、CIFICATIONS MIL-C-572 - Cord, Yarns and Monofilaments Organic Synthetic Fiber MIL-T-3530 - Thread and Twine, Mildew Resistant or Water Repellent treated (Copies of these documents are available online at http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, B
9、uilding 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR QUALITY
10、 (ASQ) ASQ Z1.4 - Sampling Procedures and Tables for Inspection by Attributes (Copies of this document are available from www.asq.org or the American Society for Quality, 611 East Wisconsin Avenue, Milwaukee, WI 53202.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in th
11、e event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained 3. REQUIREMENTS 3.1 Government and contract
12、or purchases. The requirements specified in 3.7 and 3.8 apply only to twine purchased directly by the Government. All other requirements apply to twine purchased by a contractor as a component for an end item and to twine purchased directly by the Government. 3.2 Materials. 3.2.1 Type N, vegetable f
13、iber. The type N twine shall be fabricated from cotton, flax, soft hemp, flax and soft hemp, or flax and ramie fiber. 3.2.2 Type P, polyamide fiber. Type P twine shall be fabricated from polyamide fiber conforming to type P, form C of MIL-C-572. 3.3 Construction. 3.3.1 Type N twine. The type N twine
14、 shall be constructed from a minimum of six Z-twist singles yarns twisted together with S-twist. 3.3.2 Type P twine. The type P twine shall be composed of continuous filament twisted yarns. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-713F
15、 33.4 Finish. 3.4.1 Type N, waxed twine. The type N twine shall be uniformly mildew resistant and microcrystalline wax treated. The mildew resistant treatment shall conform to the requirements for type I, class 2 inhibitor of MIL-T-3530. The inhibitor may be applied with the microcrystalline wax tre
16、atment. The treatment utilized shall not contain copper or mercury, or compounds of copper or mercury. 3.4.1.1 Type N, wax content. The treated type N twine shall contain a minimum of 10 percent and a maximum of 25 percent wax when tested as specified in 4.2.4. 3.4.2 Type P waxed twine. Type P waxed
17、 twine shall be uniformly treated with a microcrystalline fungicidal wax. The treatment utilized shall not contain copper or mercury, or compounds of copper or mercury. 3.4.2.1 Type P, wax content. The treated type P twine shall contain a minimum of 20 percent and a maximum of 32 percent wax when te
18、sted as specified in 4.2.4. 3.4.2.2 Fungus resistance effectiveness. The type P waxed twine shall show no visible growth (to the naked eye) on the surface of the test specimens when tested as specified in 4.2.4. 3.5 Color. Unless otherwise specified (see 6.2), the color of the twine shall be natural
19、 unbleached color of the fiber and as naturally resulting from treatment. 3.6 Physical requirements. The finished twine shall conform to the requirements specified in table I (see 6.3) for the respective types and classes when tested as specified in 4.2.4. Table I. Physical requirements. Length per
20、pound, minimum Elongation Type Class waxed twine, yards unwaxed twine, yards Breaking strength, minimum, pound maximum maximum, percent N 1 300 - 70.0 15.0 N 2 450 - 48.0 15.0N 3 600 - 32.0 15.0 P 1 550 650 70.0 20.0 P 2 750 950 48.0 20.0P 3 1100 1400 32.0 20.0 3.6.1 Stiffness (applicable only to ty
21、pe N). The type N twine shall not deflect more than 1/8 inch when tested as specified in 4.2.4. 3.7 Put-up. Unless otherwise specified (see 6.2), the twine shall be furnished in 1 pound net weight tubes or spools. A plus or minus tolerance of 10 percent shall be permitted on the weight of any one tu
22、be or spool provided the average weight does not fall below 1 pound. The twine shall be wound in such a manner that each turn and layer is free from entanglement. A maximum total of two knots or laid-on ends or combination thereof per tube or spool shall be permitted. No piece of twine shall be less
23、 than 16 yards in length. The empty tube or spool shall measure 1 inch inside diameter, 1-1/4 inches outside diameter, and 4-1/8 inches in length. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-713F 43.8 Identification. Each holder of twine
24、shall have a label attached in such a manner as to remain in place and be clearly legible until all twine has been removed. The label shall be legibly printed, stamped, or typed with water insoluble ink. The label shall contain the following information: Stock number Nomenclature Specification numbe
25、r Type, treatment, and class Length or weight Contract number and date Contractors name 3.9 Workmanship. The finished twine shall conform to the quality and grade of product established by this specification. 4. VERIFICATION 4.1 Certificate of compliance. When certificates of compliance are submitte
26、d, the Government reserves the right to check test such items to determine the validity of the certification. 4.2 Conformance inspection. Unless otherwise specified, sampling for inspection shall be performed in accordance with ASQ Z1.4. Unless otherwise specified, the Acceptable Quality Limits (AQL
27、s) listed in this section shall be used to establish the sample sizes, however, the acceptance number shall be zero. 4.2.1 Inspection of components and materials. Components and materials shall be inspected in accordance with all requirements of referenced specifications, drawings, and standards unl
28、ess otherwise excluded, amended, modified or qualified in the specification or applicable purchase documents. A contractors certificate of compliance will be acceptable for the requirements listed in table II. Table II. Material inspection. Material identification 3.2.1 and 3.2.2 Twist (singles) 3.3
29、.1 4.2.2 Examination of the end item for visual defects. The defects listed in table III shall be counted regardless of their proximity to each other. The sample unit for this examination shall be one tube or spool of twine. The lot size for this examination shall be expressed in units of one tube o
30、r spool. The acceptable quality limit (AQL) shall be 4.0 defects per 100 units. The inspection level shall be level I. Not less than 100 feet in each sample unit shall be subjected to visual examination. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
31、,-MIL-DTL-713F 5Table III. Visual examination defects. Examine Defect Appearance and Any cut workmanship Chafed or damaged Finish lumpy or unevenly applied resulting in thin or bare spots, clearly visible 1/ Type and finish Not as specified Color Not as specifiedCleanness Overall uncleanness, clearl
32、y visible 1/ Identification Omitted, incorrect, illegible, insecurely attached, or not as specified 1/ At normal inspection distance, approximately 3 feet. 4.2.3 Examination for weight and winding. The sample unit for this examination shall be one tube or spool of twine. For lots consisting of 500 o
33、r fewer units, the sample size (number of sample units) shall be 10. The inspection level shall be S-3 and the AQL shall be 4.0 percent defective. The lot size shall be the number of tubes or spools of twine in the inspection lot. Defects shall be as listed in 4.2.3.1 and 4.2.3.2. 4.2.3.1 Examinatio
34、n for weight. A defects with regard to weight shall be considered to exist if the net weight of a tube or spool is less than the minimum or more than the maximum specified in 3.7. The number of holders examined shall be utilized in determining the average weight. A lot shall be unacceptable if the a
35、verage weight is less than the 1 pound weight specified in 3.7. 4.2.3.2 Examination for winding. Defects with regard to winding shall be considered to exist if any of the following are determined during inspection. (a) Improperly or not firmly wound resulting in kinking, knotting, entangling or slip
36、page during unwinding, or otherwise affecting free unhampered unwinding of twine. (b) Any length of twine less than 16 yards on a tube or spool. (c) A total of three or more knots or laid-on ends on a tube or spool. 4.2.4 Testing of the end item. The methods of testing specified in FED-STD-191, wher
37、ever applicable and as listed in table V shall be followed. When the data in the “number of determinations” and “Results reported as” columns are not specified in the table, they shall be as required by the referenced test method. The physical and chemical values specified in section 3 apply to the
38、average of the determinations made on a sample unit for test purposes as specified in the applicable test methods. The sample size shall be in accordance with table IV. The sample unit for testing shall be one tube or spool of twine. The lot size shall be expressed in units of one tube or spool. All
39、 test reports shall contain the individual values utilized in expressing the final result. The lot shall be unacceptable if one or more units fail to meet any requirement. Tests to determine compliance with specification requirements, including quantity of delivery, may be made under prevailing atmo
40、spheric conditions. In cases of dispute, tests shall be made upon material which has reached equilibrium under Standard Conditions as defined in FED-STD-191. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-713F 6Table IV. Sampling for tests.
41、No. of units in lot Sample size 800 or less 2 801 up to and including 22,000 3 22,001 and over 5 Table V. Test methods. Characteristic Requirement reference Test method No. of determinations per individual sample unit Results reported as Ply 3.3.1 1/ - - Twist (twine) 3.3.1 1Mercury and 3.4.1 and 1/
42、 - - copper content 3.4.2 Wax content 3.4.1.1 and 2611 2/ - - (Extractable matter) 3.4.2.1 Fungus resistance 3.4.2.2 5760 1 Growth or no growth effectiveness Length per pound 3.6 4010 3 Avg. of 3 deter. to nearest 1 yard Breaking strength 3.6 6016 5 Avg. of 5 deter. to nearest 0.5 pound Elongation 3
43、.6 6016 5 Avg. of 5 deter. to nearest 0.1 percent Stiffness 3.6.1 4.3.1 5 Avg. of 5 deter. to nearest 1/32 inch 1/ Unless otherwise specified, a certificate of compliance will be acceptable for these requirements. 2/ The extractable matter shall be determined using the chloroform extraction procedur
44、e of Method 2611. 4.3 Test methods. 4.3.1 Stiffness (applicable only to type N twine). The twine shall be extended as a cantilever beam for a distance of 3-1/4 inches. The twine shall then be straightened by running the fingers lightly over it once or twice. Not less than 10 seconds later, the defle
45、ction at the free end shall be measured (see 3.6.1). 5. PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2). When packaging of material is to be performed by DoD or in-house contractor personnel, these personnel need
46、to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activities within the Military Service or Defense Agency, or within the military services system commands. Packaging data retrieval is av
47、ailable from then managing Military Departments or Defense Agencys automated packaging files, CD-ROM products, or by contracting the responsible packaging activity. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-713F 76. NOTES (This section
48、contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use. The twine is intended for lacing and tying telephone switchboard cable forms, hookup wires, cable ends, aircraft cable bundles, electrical and electronic equipment, and electrical wi
49、re-harness assemblies. 6.1.1 Type N twine. Type N twine is intended for use where it is determined that heat has no appreciable effect on strength or elongation. 6.1.2 Type P twine. Type P twine is a strong, lightweight twine suitable for applications at relatively high humidity. 6.2 Ordering data. Procurement documents should specify the following: (a) Title, number, and dat
