1、S MIL-C-LtSbD 53 399990b 0096085 2 m MIL-C-496D U December i982 SUPERSEDING MIL-C-496C 28 June 1968 MILITARY SPECIFICATION CLIPS, END, STRAP This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This document covers the requirements
2、for end clips used on textile straps. 1.2 Classification. Clips shall be of the following types, classes, and sizes as specified (see 6.2 and 6.5). Type I - MS 51926 (Ball) Class 1 - Brass Class 2 - Steel Size - 5/8-inch, 3/4-inch, 1-inch, 1-1/4-inch, and 1-1/2-inch. Size - 5/8-inch, 3/4-inch, 1-inc
3、h, and l-1/4-inch. *. Type II - MS 70109 (Flat) L. Class 1 - Brass Size - 2-inch. * 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
4、 extent specified herein. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Natick, MA 01760 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at t
5、he end of this document or by letter. US Army Natick Research and Development Laboratories, PSC 5340 T- THIS DOCUMENT CONTAINS 1 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-C-47bD 53 77777Ob 00760b 4 MIL-C-496D SPECIFICATIONS FEDERAL Q
6、Q-B-613 - Brass, Leaded and Nonleaded: Flat Products (Plate Bar, Sheet and Strip). PPP-B-601 - Boxes, Wood, Cleated-Plywood. PPP-B-636 - Boxes, Shipping, Fiberboard. MILITARY MIL-E-480 - Enamel, Baking, Phenol-or Urea-Formaldehyde, MIL-F-495 - Finish, Chemical, Black, for Copper Alloys. DOD-P-16232
7、.- Phosphate Coatings, Heavy, Manganese or Zinc Base (For Ferrous Metals). STANDADS MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by MIL-STD-129 - Marking for Shipment and Storage. MIL-STD-147 - Palletized Unit Loads. MIL-STD-1188 - Commercial Packing of Supplies and Equipment
8、. MS 51926 - Clips, End, Strap - Type I. MS 70109 - Clips, End, Strap - Type II. Attributes. (Copies of documents, required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Other public
9、ations. 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. SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) SAE Handbook (Application for copies should be addressed to th
10、e Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15086.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-C-47bD 53 m 7777706 007b087 b m MIL-C-496D AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) A-109 - Steel, Carb
11、on, Cold-Rolled Strip B 633 - Electrodeposited Coatings of Zinc on Iron and Steel (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Technical society and technical association documents are generally available f
12、or reference from libraries. using Federal agencies ) They are also distributed among technical groups and precedence . 3. REQUIREMENTS 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document shall take le 3.1 F
13、irst article, - When specified, a sample shall be subjected to first arti inspection (see 4.3, 6.2 and 6.3). 3.2 Materials. Materials shall conform to the requirements specified herein and in the subsidiary documents applicable thereto (see 6.6). 3.2.1 Brass. Brass sheet and strip shall conform to c
14、opper alloy numbers 268 or 260, quarter-hard temper of QQ-B-613. * 3.2.2 - Steel sheet and strip. Chemical composition of the steel shall be within the range of SAE numbers Steel sheet and strip shall conform to cold rolled commercial quality and strip shall conform to cold rolled, temper No. 5 of A
15、STM A-109. 1009 - 1020. * . 3.2.3 Enamel. Enamel shall be black conforming to type I or II of MIL-E-480. 3.3 Construction. Clips shall be constructed in accordance with the design, detail, and dimensions, as shown on applicable Military Standard and as specified herein. shown on MS 70109 and formed
16、with the smooth edge of the material on the outside of the clip (see 6.4). When clips are assembled to a strap and tested as specified in table II, no split edges shall be in evidence. The type I clip shall be as shown on MS 51926. The type 11 shall be as 3.3.1 Type I clips. 3.3.1.1 Class 1. Type I,
17、 class 1 clips shall be fabricated of brass specified in 3.2.1 and as shown on MS 51926. 3 :-. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-496D 53 W 9799906 0076088 W MIL-C-496D 3.3.1.2 Class 2. Type I, class 2 clips shall be fabricated of
18、steel specified in 3.2.2 and as shown on MS 51926. 3.3.2 - Type II, Class 1 clips. Type II, class 1 clips shall be fabricated of brass specified in 3.2.1 and as shown on MS 70109. 3.4 Finish. The clips shall be finished as specified herein. Prior to finishing, all clips shall be thoroughly cleaned i
19、n accordance with commercial practice and shall be free of corrosion, dirt or discoloration. 3.4.1 Class 1, brass. Unless otherwise specified (see 6.2), type I and II brass ciips shall be given a black chemical finish conforming to MIL-F-495 and tested as specified in table II. table II, the black c
20、hemical finish shall not flake. When clip is assembled to a strap and tested as specified in * 3.4.2 Class 2, steel. Unless otherwise specified, class 2 clips shall be zinc plated and phosphate finished in accordance with type IV of ASTM B-633, followed by bake enameling. The enamel shall be as spec
21、ified in 3.2.3. The enamel coating shall level out to a uniform, dry film thickness without orange peel, wrinkles, drops, streaks, or areas of no film. as specified in table II, the enameling on the clips shall be free of cracks or spalls . When clip is assembled to a strap and tested * 3.4.2.1 Clas
22、s 2, steel optional finishes, When specified (see 6.2), the following finishes on class 2 clips will be permitted. (a) Phosphate coating conforming to type M or 2, class 1 or 2 of (b) DOD-P-16232. Zinc plating conforming to type III, of ASTM B 633. When clip is assembled to a strap and tested as spe
23、cified in table II, the coating shall not flake, exposing bare metal. 3.5 - Workmanship. sharp edges (except that on the type II clip, rough or sharp edges shall be permitted on the inside edge), dents or tool marks. The clips shall be free from digs or gouges, burrs, slivers, 4. QUALITY ASSURANCE P
24、ROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, -the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use hi
25、s own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the document where such inspections are deemed necessary to assure suppli
26、es and services conform to prescribed requirements. 4 ,-y :. i? - i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-C-49bD 53 W 77999Ob 0096087 T W MIL-C-496D . 4.2 Classification of inspections. The inspection requirements specified herein are
27、classified as follows: a. First article inspection (see 4.3). b. Quality conformance inspection (see 4.4). 4.3 First article inspection. When a first article is required (see 6.2), it shall be examined for the defects specified in 4.4.3 and tested as specified in 4.4.4. rejection of the first articl
28、e. The presence of any defect or failure to pass any test shall be cause for 4.4 - Quality conformance inspection. Unless otherwise specified, sampling for inspection shall be performed in accordance with MIL-STD-105. 4.4.1 - Component .- and material inspection. In accordance with 4.1, components a
29、nd materials shall be inspected in accordance with all the requirements of referenced documents unless otherwise excluded, amended, modified or qualified in this document or applicable purchase document . 4.4.2 - In-process inspection. In-process inspection shall be conducted to insure that clips ar
30、e thoroughly cleaned and f-ree of corrosion and dirt before finishing (see 3.4) and that zinc plating (see 3.4.2) has been accomplished. Whenever nonconformance is noted, corrections shall be made to the affected items and pr oces s . 4.4.3 End item inspection. The inspection lot shall consist of al
31、l completely finished specified clips of the applicable Ms offered for inspection at one time. The sample unit for this inspection shall be one clip. 4.4.3.1 Visual examination. The clips shall be examined for the defects listed in table I. The inspection level shall be II and the acceptable quality
32、 level (AQL), expressed in terms of defects per hundred units, shall be 2.5 for major defects, and 6.5 total (major and minor combined) defects. TABLE I. Visual defects Classification Examine Defect Maior Minor Color and finish Not finished or the type of finish is not as specified. X Discoloration
33、clearly noticeable. X. surfaces exposed to view when in use. X Dents, nicks, pores, abrasions, pits, or scratches. X Foreign matter imbedded in finish of 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-476D 53 W 7779706 0036070 b MIL-C-496D T
34、ABLE I. Visual defects (contd) - Classification Examine Defect Major Minor Color and finish Foreign matter imbedded in finish, Coating is not level, uniform, and (cont d) but not exposed to view when in use. continuous, e.g. runs, orange peel, wrinkles, drops or streaks. X Area of no film. X Finish
35、is tacky to touch. X Plating (when applicable) is broken, cut through, corroded, or erupted. X X SPe Not as specified or as shown on Type II clip not formed with smooth Military Standard. edge on outside. X X Construction and Component cracked, fractured, malformed; workmans h ip distorted, or bent.
36、 X Digs, gouges, burrs, slivers, sharp edges, dents, or tool marks (rough or sharp edges on inside of type II clip permitted). X Edge not clean, e.g., sharp burr or fin. X 4.4.3.2 Dimensional examination. The clips shall be examined for compliance with dimensions specified. classified a defect. defe
37、cts per hundred units. Any dimension not within the specified requirements shall be The inspection level shall be S-2 and the AQL shall be 4.0, * 4.4.4 End item testing. The finished clips shall be tested as specified in table The inspection level shall be S-1 and the II for the characteristics show
38、n therein. AQL shall be 6.5 defects per hundred units. clips. The sample unit shall be three (3) 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-47bD 53 = 7797706 0096071i 8 9 MIL-C-496D i. TABLE II. Test methods No. deter- minations Results
39、Requirement Test per sample reported Characteristic paragraph method unit as Split edges showing 3.3 4.5.1 Type I incorrect; illegible; of improper size, location, sequence, or method of application. 4.5 Methods of inspection. 4.5.1 Setting test for adequacy of finish and split edges. End clips shal
40、l be firmly set by any commercial method on a corresponding size strap and examined for compliance with requirements specified in 3.3, 3.4.1, 3.4.2, and 3.4.2.1 as applicable. * 5 PACKAGING 5.1 - Preservation. Preservation shall be level A or Commercial as specified (see 6.2). 5.1.1 - Level A. Clips
41、 of one type, class and size only, shall be packed in Each box shall be agitated quantities as specified in table V in a snug-fitting intermediate fiberboard box conforming to grade WC, style optional of PPP-B-636. from time to time to assure a compact and well-filled box. in accordance with the app
42、endix of PPP-B-636. Each box shall be closed 8 ,-Y Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-496D 53 9999906 O096093 I M MIL-C-496D TABLE V. Quantity per intermediate packs and shipping containers Quantity per Quantity per Type, class, si
43、ze (inches) fiberboard box shipping container Type I - (MS 51926) Class 1.and 2 (as applicable) Size 5/8-inch 3,600 3/ 4-inch 2,400 1-inch 1,700 1-1/4-inches 1,200 1-1/2-inches 1,000 21,600 14,400 . 10,200 7,200 6,000 Type II - (MS 70109) Class 1 90 o 5,400 5.1.1.2 Commercial. Clips shall be preserv
44、ed in accordance with MIL-STD-li88. 5.2 Packing. 5.2.1 Level A packing. Clips of one type, class, and size only, preserved as Packing shall be level A, B, or Commercial as specified (see 6.2). specified in 5.1, shall be packed in a wood cleated plywood box conforming to PPP-B-601, overseas type, sty
45、le optional. accordance with the appendix of PPP-B-601. The box shall be closed and reinforced in 5.2.2 Level B packing. Unless otherwise specified (see 6.2), clips of one type, class, and size only, preserved as specified in 5.1, shall be packed in the quantity specified in table IV in a snug-fitti
46、ng fiberboard shipping container conforming to style FTC, type CF, variety DW, class domestic, grade 350 of PPP-B-636. shipping container shall be closed and reinforced in accordance with the appendix of Each PPP-B-636. 5.2.3 Commercial packing. Clips preserved as specified in 5.1, shall be packed i
47、n accordance with MIL-STD-1188. 5.3 Palletization. When specified (see 6.2), clips packed as specified shall be Each prepared palletized in accordance with load type L of MIL-STD-147, except that for overseas shipment the over-all height of the load shall not exceed 43 inches. load shall be bonded w
48、ith primary and secondary straps in accordance with bonding means K and L. MIL-STD-147. Interlocking of loads shall be effected by reversing the pattern of each course. If the container is of a size which does not conform to any of the container patterns specified in MIL-STD-147, the pallet pattern
49、used shall first be approved by the contracting officer. Pallet patterns shall be in accordance with the appendix of /- 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- I MIL-C-43bD 53 W 9999706 0096074 3 a I MIL-C-496D 5.4 Marking. In addition to any special marking required by the contract or purchase order, intermediate packs and shipping c
