1、1. SCOPE MIL-R-24337A 40 m 7777706 0423663 T m IINCH-POUNDI MIL-R-24337A(SH) 29 March 1990 SUPERSEDING 17 June 1968 (See 6,8) MIL-R-24337(SHIPS) MILITARY SPECIFICATION ROPE, NYLON, EIGHT STRAND PLAITED This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, a
2、nd is available for use by all Departments and Agencies of the Department of Defense. 1.1 Scope. This specification covers the requirements of 8 strand plaited nylon rope. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications. standards. and handbooks. The following specifi- cations
3、, standards, and handbooks form a part of this document to the extent: specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitati
4、on (see 6.2). SPECIFICATIONS FEDERAL W-T-81 - Tags, Shipping and Stock. PPP-F-320 - Fiberboard; Corrugated and Solid, Sheet Stock (Container Grade), and Cut Shapes. MILITARY MIL-C-3131 - Cordage; Packaging of. MIL-L-17331 - Lubricating Oil, Steam Turbine and Gear, Moderate MIL-L-19140 - Lumber and P
5、lywood, Fire-Retardant Treated. Service. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by usin
6、g the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 4020 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitt
7、ed without license from IHS-,-,-MIL-R-24337A 40 797ObO23bb4 3 STANDARDS FEDERAL FED-STD-191 - Textile Test Methods, (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Naval Publications and Forms Center, (ATTN: NPODS), 5801 Tab
8、or Avenue, Philadelphia, PA 19120-5099.) 2.2 Non-Government mblications. The following document(s) form a part of this document to the extent specified herein, issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. documents not listed in
9、 the DODISS are the issues of the documents cited in the Solicitation (see 6.2). Unless otherwise specified, the Unless otherwise specified, the issues of AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 885 - Standard Methods of Testing Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarn
10、s Made From Man-Made Organic- Base Fibers, (DoD adopted) Fibers. (DoD adopted) D 1141 - Standard Specification for Substitute Ocean Water. D 1577 - Standard Test Methods for Linear Density of Textile D 2257 - Standard Test Method for Extractable Matter in Yarns. D 2258 - Standard Practice for Sampli
11、ng Yarn for Testing. D 4268 - Standard Methods of Testing Fiber Ropes. (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103-1187 .) (Non-Government standards and other publications are normally available from These do
12、cuments also the organizations that prepare or distribute the documents. may be available in or through libraries or other informational services.) 2.3 Order of mecedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes pr
13、ecedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article, When specified (see 6.2), a sample shall be subjected to first article inspection (see 6.4) in accordance with 4.3. 3.2 ARDliCatiO
14、n. Unless otherwise specified, the requirements specified in 3.10 and 3.11 apply only to plaited nylon rope purchased directly by the Govern- ment. for an end item by a contractor and to plaited nylon rope purchased directly by the Government. All other requirements apply to plaited nylon rope purch
15、ased as a component 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3 Materials. The rope shall be fabricated from bright white, virgin continuous filament, heat and light resistant nylon fiber of at least six denier size, having at least 8.0 gra
16、ms per denier strength. chain polymer made of hexamethylene diamine and adipic acid, or a long chain polymer of epsilon amino caproic acid. employed in any one rope. The nylon shall be a long Mixtures of nylon fiber types shall not be 3.4 Construction. The ropes shall be made of 8 strands arranged i
17、n four pairs, where one individual strand shall be laid adjacent to the second strand in each pair and shall conform to the requirements Specified herein. strands of 3/4 through 4-1/2 inch circumference shall be made of one size of l-ply yarns, 5 inch circumference and larger shall be made of one si
18、ze of balanced 3-ply yarns and shall have equal numbers of yarns. group filaments conforming to the sizes specified in table I for the respective sizes of rope. Individual The single yarns shall be made from TABLE I. Construction. Rope size (circumference) ( inches ) Turns per foot minimum 3/4 to 4-
19、1/2 5 to 9 10 to 16 11 11 11 Denier of single yarns 5,000 to 35,000 15,000 to 35,000 24,000 minimum 3.4.1 Preparation. For single yarn construction the pattern shall be ZS and SZ. In the preparation of the constituent rope strands, the itSZS“ pattern shall be employed in the twisting of the singles
20、yarns, the 3-ply yarns and the individual strands of two pairs, while the components of the remaining pairs shall be twisted in the “ZSZ“ pattern. 3.4.2 Finished rope. The finished rope shall be constructed so that in the interweaving procedure, pairs of strands of the former structure shall be twis
21、ted in the “2“ direction, while alternating pairs of the latter structure shall be twisted simultaneously in the IS“ direction. its components with the exception of fibers shall not be permitted. Heat setting of the rope or any of 3.5 Physical requirements. The finished rope shall conform to the phy
22、sical properties specified in table II, when tested as specified in 4.6. The circum- ference in accordance with table II shall be as specified (see 6.2). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-R-24337A 40 7797906 0421bbb 5 MIL-R-2433
23、7A(SH) TABLE II. Phvsical Droperties. Circumfer- ence at load P nominal (inches) 3/4 1 1-1/8 1 - 1/4 1 - 3/4 2 2 - 1/4 2 - 3/4 3 3 - 1/2 1 - 1/2 2 - 1/2 3 - 3/4 4 4 - 1/2 5 5 - 1/2 6 6 - 1/2 7 7 - 1/2 8 9 10 11 12 13 14 15 16 ro ler ancc ?lus or minus (inches) 1/16 1/16 1/16 1/16 1/16 1/16 1/8 1/8 1
24、/8 1/8 3/16 3/16 3/16 3/16 1/4 1/4 1/4 5/16 5/16 3/8 3/8 1/2 5/8 3/4 3/4 3/4 3/4 7/16 7/16 9/16 Diame t e f nominal (inches) 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 13/16 1 1-1/8 1 - 1/4 1 - 5/16 1 - 1/2 1 - 5/8 1 - 3/4 2 2 - 1/8 2 - 1/4 2 - 5/8 3 3 - 1/4 3 - 1/2 4 4-1/4 4-1/2 5 5 - 1/4 2-1/2 Load P
25、(200 x D2 ) (pounds ) 12 20 28 38 50 63 78 112 132 153 200 253 312 345 450 528 613 800 903 1012 1250 1378 1800 2112 2450 3200 3612 4050 5000 5512 Hardness minimum no maximun (pounds) 5 5 5 5 5 5 5 5 5 5 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 .2 o 20 Linear dens i ty plus 5 percent or
26、minus O percent (pounds/100 Ft: 1.35 2.3 3.5 4.9 6.2 7.5 10.2 14.1 16.2 19.5 25.0 33.9 40.0 43.0 50.0 68.0 82.0 95.0 109. o 125. O 141, O 167. O 214. O 262, O 319. O 384. O 446. O 517.0 595. O 676. O Breaking 3 trength (minimum) (pounds) 1 500 2 500 3,700 5 O00 6 400 8,000 11,000 17 O00 20,000 24 O0
27、0 31 ,OO 38 O00 46 O00 53,000 63,000 73 O00 78 O00 95,000 L06,OOO 125,000 137,000 165,000 250,000 300 O00 360,000 380,000 441,000 507,000 572,000 200 O00 3.5.1 ElonEation. The elonnation of the ropes shall not exceed 65 percent at the breaking strength (see 4.6T5). ically, shall not exhibit evidence
28、 of sudden changes in load applications greater than 5 percent of the load weighed at the instant of change. splice slippage shall not be considered in this determination. The load elongation curve, drawn autograph- Changes due to 4 Provided by IHSNot for ResaleNo reproduction or networking permitte
29、d without license from IHS-,-,-3.5.2 Hardness. The finished rope shall meet the minimum hardness specified in table II (see 4.6.9). 3.6 Finish. No extraneous material shall be-added for the purpose of weighting the rope. 5.0 percent (see 4.6.6). The extractable matter of the -finished rope shall not
30、 exceed 3.7 Moisture content. The moisture content of the rope shall not exceed 5.0 percent (see 4.6.8). 3.8 SDiceabiiitv. The finished ropes shall be spliceable and shall not develop yarn displacement or strand cockles (distortion formed by a back twist in the strand) in the splicing test specified
31、 in 4.6.10. 3.9 Identification marker. The contractor shall identify his product by inserting a kraft paper or water repellent cotton marker within one strand in all ropes 2 inches in circumference and larger. enveloped by the cover yarns in the strand in which enclosed. specified (see 6.2), the man
32、ufacturers name, year of manufacture, and type of fLber (NYLON) shall be clearly printed on the marker. Italic or script type shall not be used. The printing shall not be affected upon exposure to water or mineral oil (see 4.6.7). The marker shall be completely Unless otherwise 3.10 Identification t
33、icket. In addition to the requirements specified in 3.9, a ticket (identification tag) shall be attached to each package unit. The ticket shall be in accordance with type B, class 1, size 4 or 5, 15 CSU Grade Designator as specified in UU-T-81. or typed with water insoluble ink. information : The ti
34、cket shall be legibly printed, stamped, The ticket shall contain the following (a) Stock number. (b) Nomenclature, (c) Specification. (d) Length. (e) Contract number and date. (f) Contractors name. (g) Year of manufacture. 3.11 Put-up. Unless otherwise specified (see 6.2), the rope shall be furnishe
35、d without knots or splices on non-returnable reels (spools) not larger than 7 feet in diameter. shall be permitted in the same put-up. When specified (see 6.2), continuous lengths other than a standard length may be used. weight, as specified (see 6.2). percent minus O percent of weight specified in
36、 table III. other than standard shall be determined in accordance with table III with the proper length ratio applied. the standard length, as specified in table III when measured in the relaxed condition. Unless otherwise specified (see 6.2), multiple lengths The rope shall be ordered by Delivered
37、weight per reel shall be within plus 10 The weight for lengths However, the actual length shall not be less than 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- I I_ - I- MIL-R-iLI337A 40 - 777770b 042Lbb 7 a MIL-R-24337A(SH) TABLE III. Put UD. Ci
38、rcumference (inches) 3/4 1 1 - 1/8 1 - 1/4 1 - 1/2 1-3/4 2 2 - 1/4 2 - 3/4 3 3 - 1/2 3 - 3/4 4 4- 1/2 5 5 - 1/2 2-1/2 6 6 - 1/2 7 7 - 1/2 8 9 10 11 12 13 14 15 16 Minimum length (feet) 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1200 600 600 600 600 600 600 600 600 600 600 600 600 600 600
39、 600 600 600 600 e Weight (pounds ) 18 30 47 65 82 102 135 187 2 14 265 332 265 286 333 449 543 629 721 826 932 448 . 1106 1415 1734 2111 2540 2951 3420 3937 4472 3.12 WorkmanshiD. The ends of all rope shall be cut off squarely and be securely whipped, taped, or heat sealed, turn and layer is free f
40、rom entanglement. and grade of product established by the requirements of this specification. The reels shall be wound so that each The rope shall conform to the quality 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4. QUALITY ASSURANCE PROVISION
41、S 4.1 ResDonsibiiity for insDection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the Performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the contr
42、actor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. Government reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessar
43、y to ensure supplies and services conform to prescribed requirements. The 4.1.1 Responsibilitv for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program
44、. absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of the manufacturing op
45、erations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. The 4.2 Classification of insDections. The inspection req
46、uirements specified herein are classified as follows: (a) (b) First article inspection (see 4.3). Quality conformance inspection (see 4.4). 4.3 First article insoection. First article inspection shall consist of the examinations specified in 4.5.1 and 4.5.2 and the test specified in 4.6 (see 6.3). 4
47、.3.1 First article sample. continuous finished length of 70 feet, and submitted for inspection and test as specified in 4.3. The first article sample for ropes shall be a 4.4 Quality conformance insDection. Quality conformance inspection shall consist of the examinations specified in 4.5.1 and 4.5.2
48、 and the tests specified in 4.4.1 and 4.6. Sampling for inspection shall be performed in accordance with table IV and V. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_- MIL-R-24337A 40 H 9797306 0423670 7 MIL-R-24337A(SH) TABLE IV, SamDling. - f
49、or visual examination and testing. of the end item. Lot size Sample size 2 - 15 16 - 25 26 - 90 91 - 150 151 - 280 281 - 500 501 - 1200 1201 - 3200 3201 - 10000 2 3 5 8 13 20 32 50 80 TABLE V. Examination for lenath and winding. Sample size I I Lot size I 1 - 10 11 - 500 501 - 3200 3201 - 10000 Al 1 10 13 20 4.4,l Material and component inspection. Determination shall be made for all characteristics specif
