1、+= HIL-B-20269E3 W 7777706 0457705 1 II INCH-POUND 11 MIL-B-20269E(MC) 26 NOVEMBER 1990 SUPERCEDING 28 January 1983 MIL-B-20269D(MC) MILITARY SPECIFICATION BUCKLES: INSIGNIA AND PLAIN This specification is approved for use by U.S.Marine Corps, Department of the Navy, and is available for use by all
2、Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers requirements for brass buckles for personnel of the U.S. Marine Corps. 1.2 Classification. The buckle shall be of the following types, as specified (see 6.2). Type I - Buckle, Insignia Type II - Buck
3、le, Plain 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. Unless otherwise specified, the following specifications, standards, and handbooks of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS)
4、 specified in the solicitation form a part of this specification to the 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 the Commanding General (PSE-C), Marine Corps Resea
5、rch, Development, and Acquisition Command, Washington, DC 20380, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC-NA FSC 8315 DISTRIBUTION STATEMENT A. Approved for public release; distribu- tion is unli
6、mited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SPECIFICATIONS FEDERAL PPP-B-676 MILITARY MIL-B-17757 STANDARDS FEDERAL - Box, Set-up. - Box, Shipping, Fiberboard (Modular: Sizes) FED-STD-151 - Metal, Test Methods. MILITARY MIL-STD-105 MIL-STD
7、-129 - Sampling Procedures And Tables For Inspection By Attributes. - Marking For Shipment And Storage (Unless otherwise indicated, copies of federal and military specifications and standards are available fromthe Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadel- phia,
8、 PA 19111-5094) 2.1.2 Other Government documents and publications. The following Government document forms a part of this specification to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. LAWS AND REGULATIONS U.S. Postal Service Manual (Applica
9、tion for copies of the manual should be addressed to the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. 20402.) 2.2 Non-Government mblications. The following documents form a part of this specification to the extent specified herein. Unless otherwise specified, the
10、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. 2 Provided by IHSNot for ResaleNo reproduction
11、or networking permitted without license from IHS-,-,-., 9 flIL-B-202bqE 83 999990b 0457907 5 UNIFORM CLASSIFICATION COMMITTEE, AGENT Uniform Freight Classification Rules (Application for copies should be addressed to the Uniform Classification Committee, Room 1106, 222 South Riverside Plaza, Chicago
12、, Illinois 60606.) NATIONAL MOTOR FREIGHT TRAFFIC ASSOCIATION, INC., AGENT National Motor Freight Classification (Application for copies should be addressed to the American Trucking Association, Inc., Tariff Order Section, 1616 P. Street, N.W., Washington, D. C. 20026.) (Non-Government standards and
13、 other publications are normally available from the organizations that prepare or distribute the documents. These douments also may be available in or through libraries or other informational services.) 2,3 Order of precedence. In the event of a conflict between the text of this specification and th
14、e references cited herein, the text of this specification shall take precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Standard sample. Standard samples are furnished solely for guidance and in
15、formation to the contractor (see 6.3). Variation from this specification may appear in the sample, in which case the specification shall govern. 3.2 First article. When specified (see 6.2), the contractor shall furnish sample unit(s) for first article inspection and approval (see 4.4 and 6,4). 3.3 M
16、aterials. 3.3.1 Copper base allovs. When tested as specified in 4.6.2, the chemical composition of the copper base alloy from which the buckles, male catch, female catch, and keepers are stamped shall be 84.0 to 86.0 percent copper, 0.05 percent maximum lead, 0.05 percent maximum iron, 0.15 percent
17、maximum total other elements and the remaining percent zinc. The copper base alloys shall be free from pits, scale (including red oxide), dents, nicks, cracks, deep scratches, segregations, and foreign inclusions which cannot be removed in later processing. 3 Provided by IHSNot for ResaleNo reproduc
18、tion or networking permitted without license from IHS-,-,-3.3.2 Hard solder. Hard solder shall be a nonferrous alloy having a melting point of not less than 1,075OF. 3.4 Desian. The buckles shall be the Marine Corps design shown on Figures 1 and 2. Each buckle shall consist of a front plate with a m
19、ale catch soldered to the back, a female catch to be attached to the end of the the belt and two belt keepers. As an alternate to the design shown on Figures 1 and 2, the integral female catch may be made with 1/8-inch diameter wire or rod of material specified in 3.3.1 hard soldered on the back at
20、each square corner of the female catch. Each soldered end shall be located 1/16 inch maximum from the side edge of the female catch. When this alternate female catch is used, the inside opening shall be 13/32 inch wide and 1-7/8 inches long. The stamped design of the front plate for type I buckle sh
21、all be true impressions of the dies extracted from the hub furnished by the Government. 3.5 Hubs, dies and tools. A hub for type I buckle will be loaned to the contractor by the Government, The Government furnished hub shall be used only for making the contractors working dies. Upon completion of co
22、ntract, the hub shall be returned to a point designated by the contracting officer. The contractor shall be held responsible for the loss, damage, or mutilation of the hub while in his possession. Determination of cost of replacing the lost, broken, or damaged hub shall be made by the Government. Di
23、es and tools shall be furnished by the supplier and, unless otherwise specified, shall remain his property. The contractors dies shall be tooled and polished to remove any dents, nicks, scratches, or other imperfections. No alterations to the design shall be permitted. 3.6 Construction. Buckles shal
24、l be made of the materials specified herein and shall be constructed to include the components and construction details specified herein and as shown on Figures 1 and 2. A forcer shall be permitted to bring up the Marine Corps design and there shall be no sharp or rough edges or corners. The impress
25、ion of the forcer shall be regular and symmetrical upon the back of the front plate. 3.6,l Solderinq. Soldered parts shall be completely joined without excess solder. All flux shall be removed, and the joint shall be clean, smooth, and strong without burned or reduced areas. The soldered joint shall
26、 withstand the test specified in 4.6.1. 3,6.2 Finish. Finished buckles shall match an approved sample for color and finish. All component parts of the buckles shall be acid dipped to produce a uniform gold color free from scale. The outer surfaces and edges of the front plate and female catch and al
27、l surfaces and outer edges of the keepers shall be highly 4 e e e Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-polished to a mirror-like finish free from dents, nicks, and scratches. All corners and edges shall be slightly rounded. However, such f
28、inishings shall not be carried to the point where edges are excessively rounded or details of design fail to meet the requirements specified herein. All other surfaces and edges shall be clean, smooth, and free from burrs, drag, step, tool marks, sharp edges and corners, and roughness. 3.7 Workmansh
29、ip. The finished buckles shall conform to the quality of product established by this specification. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibilitv for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection req
30、uirements (examinations and tests) as specified herein. Except as otherwise 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 govern- ment. The go
31、vernment 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. 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5.
32、 The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspec- tion requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies subm
33、ittedto the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements. This does not authorize submission of known defective material, either indicated or actual
34、, nor does it commit the Government to accept defective material. 4.1.2 Certificate of compliance. Where certificates of compliance are permitted, the Government reserves the right to check test such items to determine the validity of the certifica- tion. 4.2 Classification of inspection. The inspec
35、tion requirements specified herein are classified as follows: a. First article inspection (see 4.4). b. Quality conformance inspection (see 4.5). 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-B-202b3E 3 m 777770b 0457730 5 m 4,3 Inspection c
36、onditions. Inspections shall be in accordance with the provisions set forth in MIL-STD-105, except where otherwise indicated herein, 4.4 First article inspection. When first article is required, inspection shall be made of a completely fabricated buckle for conformance to all provisions of this spec
37、ification. 4.5 Quality conformance inspection. 4.5.1 Component and material inspection. Testing shall be performed on the copper base alloy specified in 3.3.1 for chemical composition. The lot shall be expressed in terms of 1 pound and the requirement shall be applicable to lot average with two dete
38、rmina- tions for each element, The results shall be reported to the nearest 0.1 percent. The sample unit shall be 8 ounces or equivalent of a composite sample. Components and materials listed below may be accepted on the basis of a contractors certification of compliance for characteristics shown. C
39、omponent Characteristics Rmt. para. Hard solder Material identification 3.3.2 and melting point. 4,5.2 Examination of end item. The end item shall be examined for the defects listed in 4.5.2.1 and 4.5.2.2. The sample unit shall be one buckle of each type, The inspection level shall be II (see 6.5).
40、4.5.2.1 General defects. General defects shall be classified as follows: 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-20267E 3 m 9797906 0457911 7 m Elassif ication Examine Color and finish Design Type Quality of metal Construc- tion and w
41、orkmanship a. b. C. d. e. f. a. b. a. b. C. d. Defect Does not compare favorably with standard or approved sample. Outer surfaces and edges of the front plate and female catch or all surfaces and outer edges of the keepers not mirror-like finish. Abraded; scuffed, scratched or otherwise damaged. Sta
42、in or discoloration clearly noticeable. Buff drag or cloudy finish, clearly noticeable. Segregations or foreign inclusions in the metal. Type I buckle insignia design details are altered and do not conform to Government hub. Any significant detail of the insignia reduced or obliterated. Not type spe
43、cified. Surface spotted or open grained, i . e . , pitted, porous crystalline. Metal cracked or fractured. Any warp, twist, or distortion producing irregular surface contour or outline. Any detail struck over, resulting in double impression. Burr, fin, rough or sharp edge, drag or step. Major 101 10
44、2 103 104 105 106 107 108 Minor A 201 202 203 204 205 B - 301 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Examine Construc- tion and workmanship MIL-B-20267E 3 7777706 0457732 7 Classification e. f. h. i. je k. Defect Dent, pit, dig, gouge, nic
45、k, mark or mutilitation. Any component missing, damaged, malformed, bent, or otherwise defective, affect- ing appearance or service- ability. Any corner or edge not slight- ly rounded or excessively rounded. Soldered parts not completely joined i.e., any perceptible opening in joint. Any solder spat
46、ter or discolor ation on edge. Any solder spatter or discolor ation on back of buckle exceeding 3/16 inch. Any area burned or reduced in soldering or acid cleaning clearly noticeable or flux not removed. Maior 109 Minor A 206 207 208 B - 302 303 304 4.5.2.2 Examination for dimensions. Any dimension
47、that is not within the tolerances specified herein shall be classified as a defect. The inspection level shall be S-2 (see 6.5). Testing of the completely fabri- cated buckle shall be performed in accordance with Table I for the characteristics shown therein. There shall be one determination per sam
48、ple unit and the results shall be reported as pass or fail. The sample unit shall be one buckle (front plate, female catch and keeper) of each type. The requirements are applicable to the individual unit. The inspection level shall be S-1 (see 6.5). 4.5.3 Testinq of the end item. 8 Provided by IHSNo
49、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-20269E 83 777990b 0457913 O m Table I - End item testing Characteristic Rqmt. para. Test method Test for soldered joints 3.6.1 4.6.1 4.5.4 Examination of preparation for deliverv reuuirements. An examination shall be made to determine compliance with packaging, packing and marking requirements in Section 5. Defects shall be scored in
