1、MIL-S-52607 (ME) 6 May 1968 MILITARY SPECIFICATION SLING, CARGO, NET: NYLON ROPE (LIGHTWEIGHT TYPE FOR HELICOPTER USE) This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers two sizes of lightweight nylon r
2、ope cargo-net slings capable of carrying a 2000-pound load by helicopter. 1.2 Classification. The sling shall be square with square meshes. Slings shall be of the following nominal sizes, as specified (see 6.2): Size 1 - 8 feet x 8 feet. Size 2 - 10 feet x 10 feet. 2. APPLICABLE DOCUMENTS 2.1 The fo
3、llowing documents of the issue in effect on date of invita- tion for bids or request for proposal form a part of this specification to the extent specified herein: SPECIFICATIONS Federal QQ-S-781 PPP -B - 6 O 1 PPP-B-640 Military MIL-P- 116 MIL-C-50 40 MIL-R-17 343 - Strapping, Steel, and Seals. - B
4、oxes, Wood, Cleated-Plywood. - Boxes, Fiberboard, Corrugated, Triple-Wall. - Preservation-Packaging, Method of. - Cord, Nylon. - Rope, Nylon. FSC 3940 Licensed by Information Handling ServicesMIL-S-52607A 39 m STANDARDS Military MIL-STD-105 MIL-STD-129 MIL-STD-130 999770b 0286523 i m Sampling Proced
5、ures and Tables for Inspection by Attributes, Marking for Shipment and Storage. Identification Marking of US Military Property. (Copies of specifications and standards required by suppliers in connec- tion with specific procurement functions should be obtained from the procuring activity or as direc
6、ted by the contracting officer.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. NATIONAL MOTOR FREIGHT TRAFFIC ASSOCI
7、ATION, INC., AGENT National Motor Freight Classification. (Application for copies should be addressed to the American Trucking Associations, Inc., ATTN: Tariff Order Section, 1616 P Street, NW, Washington, DC 20036.) UNIFORM CLASSIFICATION COMMITTEE, AGENT Uniform Freight Classification, (Applicatio
8、n for copies should be addressed to the Uniform Classifica- tion Committee, ATTN: Tariff Publishing Officer, Room 1106, 222 South Riverside Plaza, Chicago, IL 60606,) 3. REQUIRJ3MJ3NTS 3.1 Description, The sling shall be as specified herein. The sling shall be flat with square-shaped nylon rope mesh
9、es and shall have a seized bight at each corner of the frame, 3.2 First article (preproduction model). The supplier shall furnish one or more slings as specified (see 6.2) for examination and testing within the time frame specified (see 6,2) to prove prior to starting production that his production
10、methods will produce slings that comply with the requirements of this specification. Examination and test shall be as specified in 2 Licensed by Information Handling ServicesMIL-S-5260 7A(ME) * Section 4; and, unless otherwise specified herein, all examinations and test shall be conducted by the sup
11、plier subject to surveillance and approval by the Government (see 6.3). When specified (see 6.2), the Government will conduct any or all of the preproduction examination and test, as specified (see 6.2). 3.3 Material. Material shall be as specified herein and shall be new and unused. and shall be su
12、bject to all provisions of this specification. Materials not specified shall be selected by the supplier 3.3.1 Nylontrope. Nylon rope shall conform to MIL-R-17343, with the Rope used for the exception that the rope shall be heat set. Rope used for construction of the meshes shall be 1-1/8 inches in
13、circumference, construction of the border and bights shall be 2-1/4 inches in circum- f erence. 3.3.2 Nylon cord. Nylon cord shall conform to MIL-C-5040, Type I. 3.4 Capacities. 3.4.1 Safe working load. The safe working-load (swl) of the sling shall be 2000 pounds. 3.4.2 Proof load. When subjected t
14、o a proof load of twice the swl specified in 3.4.1, the sling shall show no evidence of broken strands or rope, seizing, or splices pulling out. Q 3.5 Construction. 3.5.1 Meshes. Size of mesh shall be 6 inches square, plus or minus 1/2 inch. zontal mesh rope under one strand of the vertical mesh rop
15、e at each inter- section and evenly relaying to form a firm intersection. mesh rope shall be fastened to the border rope, relaying the mesh rope, and taking one turn around the border rope. The end of the mesh rope shall be spliced into its own part with four full tucks, leaving strand ends protrudi
16、ng 1/2 inch to 1 inch beyond the last tuck. Meshes shall be constructed by passing one strand of the hori- Each end of the 3.5.2 Border rope. The border rope shall be formed from a continuous The border rope shall be made endless with a splice piece of rope extending the full length of the perimeter
17、 including the four bights (see 3.5.3). consisting of four full tucks, leaving strand ends protruding 1/2 inch to 1 inch beyond the last tuck. 3 Licensed by Information Handling ServicesflIL-S-52607A 39 m 999990b 02b523 m 3.5.3 Bights. A bight shall be made from the border rope by forming the loop a
18、t each corner of the net. The loop, when stretched to its maximum, shall be 4 feet long. and seized together, using nylon cord specified in 3.3.2, by taking a minimum of 15 turns on the,inner seizing and a minimum of 14 turns on the outer seizing. The two parts chat form the loop shall be crossed 3.
19、5.4 Splices. Splices shall be tight and each tuck shall be pulled Care shall be taken up snugly. Strand ends shall be fused by heating. in fusing the strand ends to prevent damage to adjacent rope. 3.6 Identification marking. Slings shall be identified in accordance with MIL-STD-130. 3.7 Workmanship
20、. Rope and cord shall be sound and free from severed, twisted, kinked, or tom yarns or strands. Seizing shall be free of loose or insufficient rounds and shall be secure. loose or insufficient tucks. Splices shall be free of 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless o
21、therwise specified in the contract or purchase order, the supplier is responsible for the perform- ance of all inspection requirements specified herein. specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection require- me
22、nts specified herein, unless disapproved by the Government. The Govern- ment reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Except as otherwise 4.1.1 C
23、omponent and material inspection. The supplier is responsible for insuring that components and materials used are manufactured, examined and tested in accordance with referenced specifications and standards. 4.2 Classification of inspections. Inspections shall be classified as follows : (a) Preprodu
24、ction inspection (see 4.3). (b) (c) Inspection of preparation for delivery (see 4.6). Quality conformance inspection (see 4.4). 4 Licensed by Information Handling Services4.3,1 Examination. The sling shall be examined as specified in 4.5.1. Presence of one or more defects shall be cause for rejectio
25、n, 4,3,2 Test, The sling shall be tested as specified in 4.5.2, Failure of the test shall be cause for rejection. 4,4 Quality conformance inspection. 4,4.1 Sampling. Sampling for examination and tests shall be in accord- ance with MIL-STD-105, 4.4.2 Examination. Samples selected in accordance with 4
26、.4,i shall be examined as specified in 4,5.1. major defects and 6.5 percent defective for the minor defect AQL shall be 2,5 percent defective for 4.4.3 Test. Samples selected in accordance with 4,4.1 shall be tested as specified in 4,5,2. AQL shall be 2.5 percent defective. 4,5 Inspection procedure.
27、 4,5,1 Examination. The sling shall be examined as specified herein for the following defects: Ma j or 101. Material not as specified, 102. Nylon rope not free from harmful or extraneous material, 103. Construction not as specified. 104, Workmanship not as specified; Minor 201. Marking for identific
28、ation not as specified. 4.5,2 Proof test, The sling shall be tested to the proof load speci- The load lifted by the sling shall be of a type and bulk fied in 3.4.2. so that even distribution is obtained within the sling, hoisting device to the four bights, lift the sling to a height of 3 feet, and s
29、uspend for not less than 30 minutes, Failure of or damage to any part of the sling shall constitute failure of this test. Attach a 5 Licensed by Information Handling Services6 flIL-S-52607A 39 9999906 0286525 I BfIL-S-52607A(ME) 4.6 4.6,l Inspection of preparation for delivery, Quality conformance i
30、nspection of pack. 4.6,l.l Unit of product, For the purpose of inspection, a completed pack prepared for shipment shall be considered a unit of product, 4.6.1.2 Sampling, Sampling for examination shall be in accordance with MIL-STD-105. 4.6,1.3 Examination. Samples selected in accordance ith.4.6.12
31、shall be examined for the following defects. AQL shall be 2,5 percent defective. 105. Materials or containers not as specified., Each incorrect material or container shall constitute one defect. Each sling not folded or rolled, tied and preserved as specified. Slings of unlike size packed together.
32、106. 107. 108. Strapping not finished as specified. 109. Marking illegible, incomplete, incorrect, or missing. 5. PREPARATION FOR DELIVERY 5.1 Preservation and packaging, Preservation and packaging shall be Level A.or C, as specified (see 6,2). 5,1,1 Level.Ao Each sling, with the corner loops folded
33、 toward the center of the sling, shall be folded or rolled to form a compact bundle, The bundle shall be secured with cotton tape or twine, shall be preserved in accordance with MIL-P-116, Method IC-3. Each bundle 5.1.2 Level Co Each sling shall be preserved and packaged to afford protection against
34、 deterioration and damage during shipment andhandling from the supplier to the initial destination. 5.2 Packing, Packing shall be Level A, B or C, as specified (see 6,2), 5.2,i Level A, Slings of like size, preserved and packaged as speci- fied in 5.1, shall be packed in close-fitting boxes conformi
35、ng to PPP-B- 601, vergeas Type, style optional, Grade Bo Strapping shall conform to QQ-S-7S1, Class 1, Type I or IV, size as applicable; and, unless other- wise specified herein, shall be Finish B. When specified (see 6.2), Finish A strapping shall be used. Licensed by Information Handling ServicesM
36、IL-S-5 2 60 7A (ME) 5.2.2 Level.B, Packing shall be as specified for Level A, except that boxes shall conform to PPP-B-640, Class 2, Style E, 5,2.3 Lev& G. Slings shall be packed to assure carrier acceptance and safe delivery to destination at lowest ratings in compliance with Uniform Freight Classi
37、fication rules or National Motor Freight Classifi- cation rules. 5.3 Marking, Marking shall be in accordance with MIL-STD-129. 6, NOTES 6,l Intended use. Slings are intended for helicopter use in trans- porting 2000 pounds or less of cargo. 6.2 Ordering data. Procurement documents should specify the
38、 following: (a) Title, number and date of this specification, (b) Size of sling required (see 1,2). (c) Time frame required for submission of preproduction model and number of slings required (see 3.2), (d) When the Government will conduct any or all of the prepro- duction model examination and test
39、, When the Government will conduct come but not all of the preproduction exam- ination and test, the contracting officer should specify which examination and test will be conducted by the Government and which examination and test shall be conducted by the supplier (see 3.2). Level of preservation an
40、d packaging and level of packing required (see 501 and 5.2) O (e) (f) When Finish A strapping is required (see 502.i), 6.3 Preproduction model, Any- changes or deviations of production slings from the approved preproduction model during production will be subject. to the approval of the contracting
41、officer. Approval of the preproduction model will not relieve the supplier of his obligation to furnish slings conforming to this specification, Custodian: . Preparing activity: Amy - ME Army - ME Review activity: Army - MT Project No. 3940-AO25 * U. S. GQVERNMENT PRINTING OFFICE: 1975 -603-766/0099 7 Licensed by Information Handling Services
