1、MIL-S-43835E 84 77777Ob 0437197 2 1 INCH-POUND I MIL-S-43835E 15 June 1990 SUPERSEDING MIL-S-43835D 30 March 1988 MILITARY SPECIFICATION STRAPS, PACK FRAME AND FIELD PACK, GROUND TROOPS This specification is approved for use by all Departments and Agencies of the Department of Defense. i. SCOPE 5; *
2、 1.1 Scope. This specification covers waist, shoulder, and chest straps for o use by ground troops in attaching and adjusting LC-2 pack frames and field packs o f 1.2 Classification. The straps or straps with pack frame shall be of the following items as specified (see 6.2). Item 1 - Strap, waist, m
3、edium field pack, LC-2 Item 2 - Strap, waist, with lower back pad; pack frame, LC-2 Item 3 - Strap, shoulder, pack frame and field packs, right hand, LC-2 Item 4 - Strap, shoulder, pack frame and field packs, left hand, LC-2 Item 5 - Straps, waist and shoulder with pack frame, LC-2 Item 6 - Straps,
4、chest for pack frame and field packs, LC-2 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be Ased in improving this document should be addressed to: U.S. Army Natick Research, Development, and Engineering Center, Natick, MA 01760-5014 by using the Standa
5、rdization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter, AMSC N/A FSC 8465 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS
6、-,-,-MIL-S-43835E 4 m 777770h CiLi37200 5 MIL-S-43835E 2. APPLICABLE DOCUMENTS 2.1 Government documents. f: 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified,
7、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 solicitation (see 6.2). STECIFICATIONS FEDERAL A-A-203 - Paper, Kraft, Untreated TT-E-529 - Enamel, Alkyd, Semigloss, Low VOC C
8、ontent DDD-L- 2 O - Label: For Clothing, Equipage, and Tentage PPP-B-636 - Boxes, Shipping, Fiberboard (General Use) MILITARY MIL-C-13924 - Coating, Oxide, Black, for Ferrous Metals MIL-L-35078 - Loads, Unit: Preparation of Semiperishable Subsistence tems; Clothing, Personal Equipment and Equipage;
9、General Specification For MIL-F-43834 - Frame, Field Pack, (Riveted), and Shelf, Cargo Support. (Lightweight) LC-1 STANDARDS FEDERAL FED-STD-595 - Colors FED-STD-751 - Stitches, Seams and Stitchings MIL I TARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes MIL-STD-129 - Ma
10、rking for Shipment and Storage MIL-STD-147 - Palletized Unit Loads MIL-STD-731 - Quality of Wood Members for Containers and Pallets i ?i I I 1 I (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order
11、 Desk,.Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-43835E 4 W 9777906 0437203 7 W MIL-S-43835E * 2.1.2 Other Government documents, drawings, and publications. The following ot
12、her Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DRAWINGS U.S. ARMY NATICK RESEARCH, DEVELOPMENT, AND ENGINEERING CENTER 2-2-3 12 - Strap, Waist, Medium Field
13、Pack, LC-2 2-2-416 - Strap, Waist, with Lower Back Pad: Pack Frame, LC-2 2-2-4 17 - Straps, Shoulder, Pack Frame and Field Pack, Left 2-2-497 - Strap, Chest 2-3-290 - Frame, Pack, Ground Troops, Lightweight, LC-1; As s emb ly 2-3-493 - Strap Packing Configuration 8-2-550 - Clip, Retainer and Right H
14、and, LC-2 (Copies of drawings are available from the U.S. Army Natick Research, Development, and Engineering Center, ATTN: STRNC-EMSS, Natick, MA 01760- 5014.) 2.2 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise speci
15、fied, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTIN
16、G AND MATERIALS (ASTM) B 633 - Electrodeposited Coatings of Zinc on Iron and Steel D 1005 - Measurement OF Dry-Film Thickness of Organic Coatings Using Micrometers D 3951 - Standard Practice for Commercial Packaging D 4181 - Standard Specification for Acetal (POW) Molding and Extrusion Materials (Ap
17、plication 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 organizations that prepare or distribute the documents, These documents also may be
18、 available in or through libraries or other informational services.) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-S-43835E 44 W 7799706 0437202 7 MIL-S-43835E * 2.3 Order of precedence. In the event of a conflict between the text of * this
19、 document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations uiiless a specific exemption has been obtained. 3 e REQUIREMENTS 3.1 First article. When specified (see 6.21, a sample shall be subject
20、ed to first article inspection (see 6.3) in accordance with 4.3. 3.2 Guide sample. Guide samples, when furnished, are solely for guidance and information to the contractor (see 6.4). Variation from this specifi- cation may appear in the sample, in which case this specification shall govern. * 3.3 Ma
21、terials and components. Materials and components shall be as specified on the applicable drawings and as specified herein. For materials U or components for which it is stated “or equal,“ if the contractor proposes to use an item considered to be equal to the material or component specified, prior t
22、o its use the contractor shall furnish a sample of the material or component, with supporting data to the contracting officer for subsequent evaluation by the responsible military agency. It is encouraged that recycled material be used when practical as long as it meets the requirements of this spec
23、ification, 5;. 3.3.1 Fastener, steel. The steel fastener specified in Drawing 2-2-416 for the waist strap shall conform to Acorn Metal Products Co., Part Nos. C-103 and A-101; Brookside Manufacturing Co., Part No. 920; State Machine Products, Part No. SMP-1; State Recreation Inc., Part No. SR-1; ITW
24、 Waterbury Co., Part No. 917; or equal. e 3.3.1.1 Finish, steel fastener. The rivets shall be given a black oxide coating conforming to class 2, 3, or 4, as applicable, of MIL-C-13924. The two lever components of the fastener shall be given a phosphate treated zinc plating conforming to type IV fini
25、sh, service condition SC3 of ASTM B 633 followed by baked enameling. The baked enamel shall conform to type I or II of TT-E-529, color black. The coating on all components shall be applied prior to assembly and shall level out to a smooth and uniform film without orange peel, wrinkles, drops, streak
26、s, or areas of no film (see 4.4.1.1). 3.3.1.2 Epoxy powder coating. As an alternate to the coating, zinc plating, and enameling specified in 3.3.1.1, the surfaces may be prepared and coated as follows: a. The rivets and two lever components of the fastener shall be prepared for coating by mechanical
27、 means. The surfaces shall be thoroughly and uniformly textured by sand blasting with 80-grit aluminum oxide. Prepared surfaces shall be kept clean during 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-43835E 9777906 0437203 O m MIL-S-43835E
28、 subsequent handling. clean implements. The surfaces shall be retained in a clean environment. The surface shall be epoxy coated not more than 8 hours after sand blasting. Handling to be by clean-gloved hands or by b. The finish coating shall be lusterless green (olive green) No. 34087 of FED-STD-59
29、5, electrodeposited epoxy powder coating conforming to H. B. Fuller Company, Kativo Powder No. KEP-43286-20 or equal. c. The electrodeposited epoxy powder coating shall be baked in accordance with commercial practice, d. The thickness of the baked coating shall be .O03 - + ,001 inch when tested as s
30、pecified in ASTM D 1005. e. The final coating shall be smooth and uniform in appearance, free from wrinkles and streaks (see 4.4.1.1). f: 3.3.2 Buckle, 2 inch, siderelease. The 2 inch plastic buckle specified on Drawing 2-2-416 for the waist strap shall conform to ITW Fastex Co., part No. SR-2D or e
31、qual. The material for the buckle shall be black Delrin. The buckle shall be rated at 250 pound tension (see 4.4.1.1). 3.3.2.1 Regrounds. Clean, unburned plastic material in the form of imperfect parts, sprues, runners, or other scraps of the same composition produced in the molding or finishing ope
32、ration may be reground and mixed with the virgin material. When reground is mixed with the virgin material, the reground shall not exceed a level of 15 percent by weight of the blended mixture. The molding material may contain a surface lubricant. 3.3.3 Clip, retainer. The retainer clip for the quic
33、k release assembly on the shoulder strap shall conform to Drawing 8-2-550 and shall be made from .virgin acetal molding compound conforming to ASTM D 4181 except that the electrical property requirements shall not apply. Clean, unburned plastic material in the form of imperfect parts, sprues, runner
34、s, or other scraps of the same composition, produced in the molding or finishing operation, may be reground and mixed with the virgin material. virgin material, the reground shall not exceed a level of 15 percent by weight of the blended mixture. The molding material may contain a surface lubricant.
35、 When reground is mixed with the 3.3.3.1 Color and finish. The color of the finished clip shall be black, The clip shall have a lusterless or dull finish on all surfaces. The finish shall be produced as a result of the molding operation and not by application of any protective coating, lacquer, or o
36、ther materials. The parts shall be clean, smooth, and free from cracks, dirt, sink marks, and flash. All gates shall be trimmed flush with the molding surfaces, 3.3.4 Frame, pack (for item 5). The pack frame, when required, shall conform to MIL-F-43834 and shall be furnished without the cargo suppor
37、t shelf. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-4335E 4 W 9779706 0439204 2 W MIL-C-43835E 3.4 Construction. The construction of the straps shall conform in all respects to the drawings listed in section 2 and as specified herein. 3.
38、4.1 Stitching. All stitches, except bartacking, shall conform to type 301 of FED-STD-751. The stitches per inch shall be as follows: For all stitching except stitching to be sewn through foam pad For stitching required to be stitched through foam pad 8-10 stitches per 6-8 stitches per stitch inch nc
39、h 3.4.1.1 Type 301 stitching. Ends of stitching shall be backstitched or overstitched not less than 1 inch (1/2 inch for box-X and W-W stitching) except where ends are turned under or caught in other seams or stitching. Thread tensions shall be maintained so that there will be no loose bobbin or top
40、 thread or excessively tight stitching resulting in loose bobbin or top thread or excessively tight stitching resulting in puckering of the materials sewn. The inter lock shall be embedded in the materials sewn. 3.4.1.1.1 Repairs of type 301 stitching. Repairs of type 301 stitching shall be as follo
41、ws: a. When thread breaks or bobbin run-outs occur during stitching, the stitching shall be repaired by restarting the stitching a minimum of 1 inch (1/2 inch for box-X and W-W stitching) back of the end of the stitching. b. Thread breaks or two or more consecutive skipped or run-off stitches noted
42、during inspection of the item (in-process or end item) shall be repaired by overstitching. The stitching shall start a minimum of 1 inch in back of the defective area (1/2 inch for box-X and W-W stitching), continue over the defective area, and continue a minimum of 1 inch beyond the defective area
43、onto the existing stitching. Loose or excessively tight stitching shall be repaired by removing the defective stitching, without damaging the materials, and restitching in the required manner. When damaged thread has been removed, needle holes do not constitute damage to the material. (When making t
44、he above repairs in a. and b. above, the ends of the stitching are not required to be backstitched.) 3.4.1.2 Bartacks, Unless otherwise specified, bartacks shall be as specified on the applicable drawing and as follows: Leng th 1/2 inch 2 1/16 3/4 inch 2 1/16 Width 1/8 inch 2 1/32 1/8 inch 2 1/32 St
45、itches per bartack 28 42 Bartacks shall be free from thread breaks and loose stitching. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-43835E 84 777770b 0437205 4 MIL-S-43835E 3.4.1.3 Automatic stitching. Automatic stitching machines may be
46、used to perform any of the required stitch patterns provided the requirements for the stitch pattern, stitches per inch, and size and type of thread are met; and at least three or more tying, overlapping, or back stitches are used to secure the ends of stitching. 3.4.1.4 Thread ends. All thread ends
47、 that are visible on the finished item shall be trimmed to a length of not more than 1/4 inch. 3.4.2 Setting of snap fasteners. A hole shall be prepunched to receive the button and eyelet components of the snap fasteners. The hole shall be smaller than the outside diameter of the button and eyelet b
48、arrels so that the barrel must be forced through the hole. The hole shall not be punched in the setting operation with the button or eyelet barrel. clinched without cutting the adjacent materials and no more than three splits shall occur in the button or eyelet barrels. The fasteners shall be secure
49、ly 3.4.3 Setting of eyelets. Holes shall be prepunched to receive the eyelets. The hole shall not be punched in the setting operation with the eyelet barrel. Holes prepunched to receive the eyelets shall be smaller than the outside diameter of the eyelet barrel so that the barrel must be forced through the hole. The eyelet shall be securely clinched without splitting and in a manner that will securely retain the loop fasteners. 3.4.4 Fusing of ends of nylon c
