1、MIL-C-4b773C 54 99997Ob 0523032 3 I I INCH-POUND I MIL-C-46793C(ME) 24 Atwil 1992 SUPERSEDING MIL-C-46793B( ME) 28 October 1983 MI L ITARY SPEC IF ICAT ION CUPOLA BODY ASSEMBLY FOR ARMORED VEHICLE BRIDGE LAUNCHER, M60A1 AND M48A5 TANK CHASSIS This specification is approved for use within the USA Bel
2、voir Research, Development , and Engineering Center, Department of the Army, and is avail able for use by all Departments and Agencies of the Department of Defense, 1. SCOPE 1.1 Scope. 2. APPLICABLE DOCUMENTS This specification covers the cupola body assembly required for the armored vehicle bridge
3、launcher, M60A1 and M48A5 tank chassis. 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents arethose listed in the issue of the
4、Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2). Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: USA Belvoir Rese
5、arch, Development, and Engineering Center, ATTN: STRBE-TSE, Fort Belvoir, VA 22060-5606 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 5420 DISTRIBUTION STATEMENT A. Approved for public release; distribution
6、is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-46773C 5L1 W 7777706 0523033 5 MIL-C-46793C(ME) . SPECIFICATION MI L ITARY MIL-T-704 - Treatment and Painting of Materiel. STANDARDS MILITARY MIL-STD-130 - Identification Marking of
7、 US Military Property. MIL-STD-889 - Dissimilar Metals. (Unless otherwise indicated, copies of military specifications and standards are available from the Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 Other Government drawinas. The follow
8、ing other Government drawings form a part of this document to the extent specified herein. specified, the issues are those in effect on the date of solicitation. Unless otherwise DRAWINGS ME TA13220E8285 - Cupo1 a Body Assembly. (Copies of drawings required by contractors in connection with specific
9、 acquisition functions should be obtained from the USA Belvoir Research, Development, and Engineering Center, ATTN: STRBE-JBS, Fort Belvoir, VA 22060-5606.) 2.2 Non-Government Dub1 ications. The fol 1 owing documents form a part of this document to the extent specified herein. Unless otherwise speci
10、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 NATIONAL STANDARDS
11、 INSTITUTE (ANSI) B 46.1 - Surface Texture. (Application for copies should be addressed to the American National Standards Institute, 1430 Broadway, New York, NY 10018.) AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) Boiler and Pressure Vessel Code for Pressure Vessels, Section IX, Qual i fi cati o
12、n Standard for Welding and Brazing Procedures, We1 ders, Brazers and Brazing Operat ions. (Application for copies should be addressed to the American Society of Mechanical Engineers, 345 East 47th Street, New York, NY 10017.) 2 t a e * Provided by IHSNot for ResaleNo reproduction or networking permi
13、tted without license from IHS-,-,-MIL-C-46793C 54 9999706 0523034 7 W MI L-C-46793C (ME) AMERICAN WELDING SOCIETY (AWS) D1.l - Structural Welding Code, Steel (Application for copies should be addressed to the American Welding Society, Inc., 550 N.W. LeJeune Road, Miami, FL 33126.) AMERICAN SOCIETY F
14、OR TESTING AND MATERIALS (ASTM) D 3951 - Standard Practices for Commercial Packaging. and Materi al s, 1916 Race Street, Phil adel phi a, PA 19103. ) the organizations that prepare or distribute the documents. may be available in or through libraries or other informational services.) (Application fo
15、r copies should be addressed to the American Society for Testing (Non-Government standards and other pub1 ications are normally available from These documents also 2.3 Order of Drecedence. In the event of a conflict between the text of this document and the references cited herein, (except for relat
16、ed associated detail specifications, specification sheets or MS standards), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 DescriDtion. The cupola body assemb
17、ly shall be in accordance with TA13220E8285 and as specified herein. 3.1.1 Drawinqs. The drawings forming a part of this specification are end No deviation from the prescribed dimensions or tolerances is product drawings. permissible without prior approval of the contracting officer. Where tolerance
18、s could cumulatively result in incorrect fits, the contractor shall provide tolerances within those prescribed on the drawings to ensure correct fit, assembly, and operation of the cupola. Any data (e.g., shop drawings, layouts, flow sheets, processing procedures, etc.) prepared by the contractor or
19、 obtained from a vendor to support fabrication and manufacture of the production item shall be made available, upon request, for inspection by the contracting officer or his designated representative. 3.2 First article. Unless otherwise specified (see 6.2), a sample shall be subjected to first artic
20、le inspection (see 6.3) in accordance with 4.3. 3.3 Material. Material shall be as specified on the applicable drawings. 3.3.1 Material deterioration wevention and control. The item(s) shall be fabricated from compatible materials, inherently corrosion resistant or treated to provide protection agai
21、nst the various forms of corrosion and deterioration that may be encountered in any of the applicable operation and storage environments to which the item may be exposed. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-46793C 54 I 9999906 052
22、3035 9 MIL-C-46793C(ME) 3.3.2 Identification of materials and finishes. The contractor shall identify the specific material, material finish or treatment for use with component and subcomponent, and shall make information available upon request to the contracting officer or designated representative
23、. 3.3.3 Dissimilar metals. Dissimilar metals shall not.be used in intimate contact with each other unless protected against galvanic corrosion, Dissimilar metals and methods of protection are defined and detailed in the MIL-STD-889. 3.3.4 Cadmium platinq. Cadmium plating and cadmium plated items sha
24、ll not be used. 3,4 Vision blocks. Vision blocks shall be installed in cupolas as specified on drawings. aft er ass embl y. Glass of vision blocks shall be free of sealing compounds and paint 3.5 Surfaces. Machine surfaces shall conform to ANSI B 46.1. 3.6 Identification markinq. All components shal
25、l be marked for identification in accordance with MIL-STD-130. 3.7 Treatment and paintinq. The portions of the item normally painted internally and externally shall be cleaned, treated, and painted in accordance with MIL-T-704, type F or Gy as applicable. Unless otherwise specified (see 6.2), topcoa
26、t color shall be camouflage green 383. If required, the item shall then be overcoated in accordance with the Government-furnished camouflage patterns with the colors specified in the camouflage patterns. 3.7.1 Government-furnished property (GFP). When specified (see 6.2) , the following property in
27、the quantity indicated will be furnished by the Government (see 6.6). Item No. Description Quanti ty 1 Camouflage paint pattern As required 3 .8 Workman s h i r. 3.8.1 Castinqs. All parts, components, and assemblies of the cupola which includes castings shall be clean of harmful extraneous material
28、such as sand, dirt, sprues, scale, and flux. Rework shall be limited to procedures which do not reduce mechanical properties or affect function. 3.8.2 Metal fabrication, Metal used in fabrication shall be free from kinks or sharp bends. The straightening of material shall be done by methods that sha
29、ll not cause injury to the material. All bends shall be made with controlled means to ensure uniformity of size and shape. External surfaces shall be free of burrs, sharp edges and corners, except when sharp edges or corners are required or where they are not detrimental to safety. 3.8.3 Weldinq and
30、 welders. 3.8.3.1 Weldinq. The surfaces of parts to be welded shall be free from scale, paint, grease, and other foreign matter. Welding shall be done by the shielded 4 6 o Q Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-46793C 54 I 9997906 0
31、523036 O W 1 MI L-C-46793C (ME) metal-arc or gas metal-arc (MIG) process and shall conform to the provisions of imperfections that may reduce the effectiveness of the part. positioned for flat welding when practicable. Before welding over previously deposited weld metal, all traces of slag shall be
32、removed, and the deposit and adjoining base metal shall be wire brushed clean. a ASME and AWS Codes. All welded parts shall be free from cracks and other Work shall be 3.8.3.2 Welders or weldins operators. Before assigning any welder or welding operator to welding work covered by this specification,
33、 the contractor shall obtain certification that the welder or welding operator has passed qualification tests as prescribed by either AWS D 1.1 or the ASME code for the materials joined and the type of welding operation to be performed and that such qual i fi cat i on is effective as defined. Contra
34、ctors who only make horizontal we1 ds need not qualify welders for “all position welding.“ The contractor is responsible for determi ni ng that automatic we1 ding equipment operators are capable of producing quality welds in accordance with AWS and ASME codes, evidence of poor welds, the Government
35、reserves the right to require retesting of any welder or welding operator (see 6.5). In the event of . . 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspectio
36、n requirements (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 requi rements speci fi ed herein , un1 ess di sapproved by the Governmen
37、t. Government reserves the right to perform any of the inspections set forth in the. speci fi cat i on where such i nspecti ons are deemed necessary to ensure suppl i es and services conform to prescribed requirements. The 0 4.1.1 Responsibility for compliance. All items must meet all requirements o
38、f sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products
39、 or supplies submitted to 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, however, this does not authorize submission of known defective material,
40、 either indicated or actual, nor does it commit the Government to acceptance of defective material. ensuring that components and materials used are manufactured, examined, and tested i n accordance with referenced speci fi cations and standards , as appl i cab1 e. 4.1.2 Component and material inspec
41、tion. The contractor is responsible for 4.2 Classification of inspection. Inspection shall be classified as follows: a. First article inspection (see 4.3). b . c. Qual i ty conformance inspect i on (see 4.4) . Inspection of packaging (see 4.6). 4.3 First article inspection. 5 Provided by IHSNot for
42、ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-4b793C 54 9999906 0523037 2 H MIL-C-46793C (ME) Q 4.3.1 Examination. The cupola body assembly shall be examined as specified in Presence of one or more defects shall be cause for rejection. 4.4 Qualitv conformance inspe
43、ction. 4.5.1. 4.4.1 Examination. Each cupola body assembly shall be examined as specified in 4.5.1. Presence of one or more defects shall be cause for rejection. 4.5 Inspect i on procedure. 4.5.1 Examination. The cupola body assembly shall be examined for the following defects: 101. 102. 103. 104. 1
44、05. 106. 107. 108, 109. 110. 111. 112. 113. 114. 115. 116, Loose, damaged, defective, binding, improperly installed, or interfering fits of screws, wires, vision blocks, and latch components. Components missing or not as specified (see 3.1). Nonconformance to the dimensions specified on the drawings
45、 (see 3.1.1). Material not as specified (see 3.3). Materials are not resistant to corrosion or deterioration or treated to be made resistant to corrosion or deterioration for the applicable storage and operating environments as specified (see 3.3.1) Contractor does not have documentation available f
46、or identification of material, material finishes, or treatments (see 3.3.2). Dissimilar metals as specified in MIL-STD-889 are not effectively insulated from each other as specified (see 3.3.3). Cadmium plating/plated items used (see 3.3.4). Vision of personnel inside of cupola impaired by defective
47、 vision blocks or by foreign matter on the vision block surfaces (see 3.4). Surfaces no.t as specified (see 3.5). Identification marking missing or illegible (see 3.6). Treatment and painting not as specified. Presence of blisters, thin spots, 1 umps, scratches, or runs (see 3.7). Workmanship not as
48、 specified (see 3.8). Castings and metal fabrication not as specified (see 3.8.1 and 3.8.2). Welding and welds not as specified (see 3.8.3.1). We1 ders and we1 di ng operators not cert i fi ed as requi red (see 3.8.3.2) 4.6 Inspection of packaqinq. The preservation, packing and marking shall be exam
49、ined to determine compliance with the requirements of ASTM D 3951. 5, PACKAGING 5.1 Preservation, Dackinq and markinq (see 6.41. Each complete cupola body assembly shall be preserved and packed in accordance with ASTM D 3951. Marking shall be in accordance with ASTM D 3951. In addition, shipping containers shall display its gross weight and cube. 6, NOTES (This section contains information of a general or explanatory nature that may be helpful , but is not mandatory.) 6 Prov
