1、MIL-C-LVLOF 83 7999906 0372057 MIL-C-1410F 30 September 1985 SUPERSEDING MIL-C-1410E 20 February 1975 MILITARY SPECIFICATION CHAIN, HOOK AND RING ASSEMBLY, TENT This specification is approved for use by all Departments and Agencies of the Department of Defense. 1- SCOPE 1.1 Scope. This document cove
2、rs one type of chain, hook, and supporting ring for M-1942 assembly tent. 2. APPLICABLE DOCUMENTS * 2.1 Government documents. Unless otherwise specified, the following documents of the issue in effect on date of invitation for bids or request for proposal form a part of this document to the extent s
3、pecified herein. SPECIFICATIONS FEDERAL RR-C-27 1 TT-E-485 - Enamel, Semigloss, Rust-Inhibiting PPP-B-601 - Boxes, Wood, Cleated-Plywood PPP-B-62 1 - Boxes, Wood, Nailed and Lock-Corner PPP-B-636 - Boxes, Shipping, Fiberboard - Chains and Attachments, Welded and Weldless Beneficial comments (recomme
4、ndations, additions, deletions) and any pertinent data that may be of use in improving this document should be addressed to U.S. Army Natick Research and Development Center, Natick, MA 01760-5014, by using the self-addressed Standardization Document Improvement Proposal (DD form 1426) appearing at t
5、he end of this document, or by letter. FSC 8340 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. y THIS DOCUMENT CONTAINS /a PAGES Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-1410F MIL1 TARY MIL-L-10547 - Li
6、ners, Case, and Sheet, Overwrap; Water-Vaporproof MIL-T-12879 - Treatment, Chemical, Prepaint and Corrosion or Waterproof, Flexible Inhibitive, for Zinc Surfaces STANDARDS FEDERAL FED-STD-595 - Colors MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection MIL-STD-129 - Marking for Ship
7、ment and Storage MIL-STD-147 - Palletized Unit Loads by Attributes DRAWING UmS. ARMY NATICK RESEARCH AND DEVELOPMENT CENTER 4-1-107 - Chain, Hook and Ring, Tent Assembly (Copies of documents required by manufacturers in connection with specific acquisition functions should be obtained from the contr
8、acting activity or as directed by the contracting officer.) * 2.2 Other publications. Unless otherwise specified, the following documents of the issue in effect on date of invitation for bids or request for proposal form a part of this document to the extent specified herein. AMERICAN SOCIETY FOR TE
9、STING AND MATERIALS (ASTM) A 108 - Steel Bar, Carbon, Cold Finished (Standard Quality) A 153 - Zinc Coating (Hot Dip) on Iron and Steel Hardware B 633 - Electrodeposited Coatings of Zinc on Iron and Steel D 1005 - Measurement of Dry Film Thickness of Organic Coatings D 2092 - Preparation of Zinc-Coa
10、ted Steel Surfaces for Painting D 3951 - Standard Practice for Commercial Packaging (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) 2 ? t Provided by IHSNot for ResaleNo reproduction or networking permitted wit
11、hout license from IHS-,-,-MIL-C-I4IOF 83 7777706 0372057 I 1 MIL-C-14lOF (Technical society and technical association documents are generally available for reference from libraries. technical groups and using Federal agencies.) They are also distributed among 2.3 Order of precedence. In the event of
12、 conflict between the text of this document and the references cited herein, the text of this document shall take precedence . 3. REQUIREMENTS 3.1 First article. When specified, a sample shall be subjected to first article inspection (see 4.3, 6.2, and 6.3). * 3.2 Materials. The materials used shall
13、 conform to the applicable referenced documents specified herein. Where materials are not definitely specified, they shall be of the quality and type normally used by the manufacturer provided that the completed item complies with all provisions of this document. Recycled material may be used (see 6
14、.4). * 3.2.1 Steel bar, carbon. The carbon steel bar shall conform to round form, cold finished (CE), composition 1008-1020, as applicable, of ASTM A 108. 3.2.2 Chain. The chain shall conform to type I, grade C, class 5, style 2, 7/32-inch nominal size of RR-C-271, except that the number of links pe
15、r foot may be 13 1/3 in lieu of 14. 3.2.3 Ring, terminal. The terminal ring shall be size 7/16 by 2 1/2 inches in accordance with type VI of RR-C-271, except that the ring may be welded in lieu of being forged. fabricated of 17/32-inch diameter round steel bar with welded ends and heat treated, prov
16、iding the terminal ring has a minimum yield strength of 70,000 psi (at 0.2 percent offset) as specified in RR-C-271. In lieu of being forged, the terminal ring may be 3.2.4 Enamel. Enamel shall conform to any type, composition G or L, olive drab color No. 24087 of TT-E-485. 3.2.5 Alternate component
17、s. Components offered as equivalent to components specified herein and on the referenced drawings as specific manufacturers part number or equal shall be functionally equal to, of equal or better quality with the manufacturers part number identified. inclusion of such a component in the design of th
18、e specified end product shall not require modification or change to any other specified component and shall not reduce ease of maintenance to it or any other components, unless such modification or change is specifically approved by the contracting officer. The incorporation and 3 Provided by IHSNot
19、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-* MIL-C-1410F Prior to manufacture of the preproduction first article, or if none is required, prior to commencing production, the contractor shall submit for the contracting officers approval a list identifying each pro
20、posed alternate component, together with proof that each listed component complies with requirements specified herein. The contracting officer, at his option, may require a physical sample of the proposed substitution. Approval of the submitted listing, together with necessary supporting data, autho
21、rizes the commencement of first article or production manufacture as applicable and does not relieve the supplier of the responsibility that these components perform in accordance with specified requirements when incorporated into the end product. 3.3 Construction. The construction of the chain, hoo
22、k and ring assembly shall be in accordance with Drawing 4-1-107 and as specified herein. The end link of each chain shall be spread to allow movement of the chain without binding on the hook. 3.3.1 Link, terminal. The terminal link shall be fabricated of composition 1008-1020 steel as specified in 3
23、.2.1 and ASTM A 108. 3.3.2 Ring, supporting. The supporting ring shall be fabricated of composition 1015-1020 steel as specified in 3.2.1 and ASTM A 108. 3.3.3 Welding. All welding shall be complete, sound, smooth, uniform, and free from burn through area, pits, slag inclusion, porosity, crack, and
24、excess flux deposit, 3.4 Finish. All burrs, fins, rough edges, and sharp edges shall be ground smooth or removed prior to finishing. 3.4.1 Zinc coating. After complete fabrication, the chain, hook and ring assembly shall be zinc coated by any one of the following methods: a. Electrodeposited zinc co
25、ating with supplementary phosphate treatment conforming to type IV, classification Fe/Znl3 Sc3, of ASTM B 633. be Hot dip zinc coating conforming to ASTM A 153 with preparation for painting in accordance with method A-crystalline zinc phosphate treatment of ASTM D 2092. C. Commercial hot dip zinc co
26、ating with chemical treatment conforming to type I, class 1 or 2 of MIL-T-12879. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-LqLOF 3 7997906 0372063 T W a 3 e 3.4.2 Enameling. The zinc coated chain, hook and ring assembly shall be coated
27、with enamel specified in 3.2.4. ree of any area of thin or no film, scratch, scuff, or abrasion exposing bare metal, blister, peel, soft run, dirt, or foreign matter embedded in finish, and wet or tacky paint. The finished coating shall be dry and * 3.4.3 Epoxy coating. In lieu of the zinc coating s
28、pecified in 3.4.1 and enameling as specified in 3.4.2, the prepared surfaces shall be prepared and coated as follows: a. The chain, hook and ring assembly shall be prepared by mechanical means. blasting with 80 grit silicate. subsequent handling. implements. The surfaces shall be retained in a clean
29、 environment. The surface shall be coated with epoxy not more than 8 hours after sand blasting. The surfaces shall be thoroughly and uniformly textured by sand Prepared surfaces shall be kept clean during Handling shall be by clean-gloved hands or by clean b. The finish coating shall be green, color
30、 No. 24087 of FED-STD-595, electrodeposited epoxy powder coating conforming to Corvell ECA-1555-FC3 epoxy coating or its equal. contractor shall submit the item to the contracting officer with supporting data for approval. Prior to use of the item of equal quality, the C. The electrodeposited epoxy
31、powder coating shall be baked in accordance with commercial practice. d. The thickness of the baked coating shall be a minimum of 0.003 inch when tested as specified in 4.4.3.3. e. The final coating shall be smooth and uniform in appearance, free from wrinkles and streaks. 3.5 Workmanship. All compo
32、nents of the chain, hook and ring assembly shall be clean and free from dirt, grease, split, fracture, burrs, fins, rough edges, and sharp edges. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the Except as otherwise contract or purchase order, the c
33、ontractor is responsible for the performance of all inspection requirements as specified herein. specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the
34、 Government. The 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_I-_ _- .MIL-C-L4LOF 83 U 977790b 03720b2 L MIL-C-1410F Government reserves the right to perform any of the inspections set forth in the document where such inspections are deemed nec
35、essary to ensure supplies and services conform to prescribed requirements. 4.2 Classification of inspection. The inspection requirements specified herein are classified as follows: a. be First article inspection (see 4.3). Quality conformance inspection (see 4.4). 4.3 First article inspection. When
36、a first article is required (see 6.2), the chain, hook and ring assembly shall be examined in accordance with table II and 4.4.3.2. The presence of any visual or dimensional defect shall be cause for rejection of the first article. 4.4 Quality conformance inspection. Unless otherwise specified, samp
37、ling shall be performed in accordance with MIL-STD-105. 4.4.1 Component and material inspection. In accordance with 4.1, components and materials shall be inspected in accordance with all the requirements of referenced documents unless otherwise excluded, amended, modified or qualified in this docum
38、ent or applicable purchase documents. 4.4.2 In-process inspection. 4.4.2.1 Process examination. Examination shall be made during the manufacturing process for the requirements listed in table I to establish that no deviation is made from the indicated requirements. Whenever a nonconformance is noted
39、, correction shall be made to the affected items and the process. TABLE I. Process examination Requirement or operation Requirement paragraph Welds are complete, sound, smooth, uniform, and free from burn through area, pits, slag inclusion, porosity, crack, and excess flux deposit 3.3.3 Chain, hook
40、and ring assembly is zinc coated with applicable treatment prior to enameling 3.4.1 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-LLILOF 83 7777706 03720b3 3 W MIL-C-1410F 4.4.3 End item inspection. The inspection lot shall consist of all t
41、he chain, hook and ring assemblies offered for inspection at one time, The sample unit for this examination shall be one completely fabricated chain, hook and ring assembly. 4.4.3.1 Visual examination. Visual examination of the chain, hook and ring assemblies shall be made for the defects listed in
42、table II. The inspection level shall be II and the acceptable quality level (AQL) shall be 4.0 for major defects and 10.0 for total defects, expressed in terms of defects per hundred units. TABLE II. Classification of defects Examine Defect Category Finish Not finished Color of finish is not as spec
43、ified Area of no film: - Bare metal showing in area of - Bare metal showing in area of less Area of thin film: - Zinc coating shows through in area - Zinc coating shows through in area Scratch, scuff or abrasion exposing bare metal: 112 square inch or more than 1/2 square inch of 1 square inch or mo
44、re of less than 1 square inch - 6 inches or more in longest dimension - Less than 6 inches in longest Blister, peel, soft run, dirt or foreign Wet or tacky paint dimension matter embedded in finish - Major Minor 101 201 102 202 103 203 104 204 205 206 7 Provided by IHSNot for ResaleNo reproduction o
45、r networking permitted without license from IHS-,-,-_-_- MIL-C-LqLOF 3 a 7977906 0372064 5 MIL-C-1410F TABLE II. Classification of defects - Continued Examine Defect Category Major Minor - Construction Any component not fabricated of and workmanship applicable referenced materials 105 Any component
46、missing 106 Any component not fabricated as - End link of chain not spread and is specified: binding to a degree that it will not allow movement of the end link of the chain on the hook 107 movement without binding of the end link on the hook, but will function - End link of chain not spread to allo
47、w Welding Any component not clean (i.e., evidence Split or fracture 108 Burr, fin, rough edge or sharp edge More or less than the specified number of grease or dirt) of links per chain 109 207 208 209 Mi s s ing 110 Not type of weld specified 111 Not complete or not sound 112 113 Has burn through ar
48、ea or crack Not smooth, not uniform or has pits, slag inclusion, porosity, or excess flux deposit 210 4.4.3.2 Dimensional examination. Examination shall be made of the end item for defects in dimensions. shall be classified as a defect. AQL of 4.0 expressed in terms of defects per hundred units. Any
49、 dimension not within the specified requirements The inspection level shall be S-2 with an 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-HIL-C-li9LOF 83 9999906 0372065 7 * 4.4.3.3 Epoxy coating thickness examination (when applicable). The end item shall be examined for thickness of the epoxy coating in accordance with ASTM D 1005. Any epox
