1、I INCH-POUND I MIL-DTL-48412B 12 September 2000 SUPERSEDING MIL-I-48412A 21 September 1992 DETAIL SPECIFICATION INITIATOR, CARTRIDGE ACTUATED, M53 REMANUFACTURED METAL PARTS ASSEMBLY This specijkation is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scop
2、e. This specification covers the requirements for the M53 Cartridge Actuated Initiator Remanufactured Metal Parts Assembly (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include docum
3、ents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents specified in sections 3 and 4 o
4、f this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 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 are those listed in th
5、e Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS DEPARTMENT OF DEFENSE MIL-A-25 50 Ammunition, General Specification For Beneficial comments (recommendations, additions, deletions) and any pertinent dat
6、a which may be of use in improving this document should be addressed to: Commander, Indian Head Division, Naval Surface Warfare Center, Standardization Team (Code 840M), 1 O1 Strauss Avenue, Indian Head, MD 20640-5035 by using the Standardization Document Improvement Proposal (DD Form 1426) appearin
7、g at the end of this document, or by AMSC NIA FSC 1377 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. STANDARDS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-484 12B DEPARTMENT OF DEFENSE MIL-STD-4 13 Visu
8、al Inspection Guide for Elastomeric O-rings (Unless otherwise indicated, copies of federal and military specifications and standards are available from Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 191 11-5094.) 2.2.2 Other Government documents, drawings, and p
9、ublications. The following other 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 Naval Surface Warfare Center, Indian Head (CAGE Codes 19200 and 19203) 1
10、0520621 Initiator, Cartridge Actuated, M53, Metal Parts Assembly (Application for copies should be addressed to Commander, Naval Surface Warfare Center, Indian Head Division, 101 Strauss Avenue, Data Control Branch (Code 8410), Indian Head, MD 20640-5035.) 2.3 Non-Government publications and drawing
11、s. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in solicitation. Unless otherwise specified, the issues of documents not listed in t
12、he DODISS are the issues of the documents cited in the solicitation (see 6.2). PUBLICATIONS AMERICAN SOCIETY FOR QUALITY CONTROL ASQCZ1.4 Sampling Procedures and Tables for Inspection by Attributes ASQC A8402 Quality Management and Quality Assurance Vocabulary (APPLICATION FOR COPIES SHOULD BE ADDRE
13、SSED TO THE mRICAN SOCIETY FOR QUALITY CONTROL, PO Box 3005, 611 E. WISCONSIN AVE., MILWAUKEE, WI 53201-4606.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein (except for related associated specifications or specification sheets),
14、 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 Materials. All materials used in the manufacture of the initiators shall conform to the specifications referre
15、d to on the respective drawings unless specific approval in writing covering a departure thereftom has been obtained ftom the cognizant Navy design activity prior to manufacture. When alternate 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DT
16、L-484 12B materials or methods of manufacture are specified on the drawings, the bidders selections shall be clearly stated in the proposal. The remanufactured initiator metal parts assembly shall contain a new shear pin and new O-rings. 3.2 Hydrostatic pressure. The initiator chamber and cap shall
17、withstand a hydrostatic pressure of 14,000 to 15,000 pounds per square inch (psi) for 15 seconds, minimum, without deformation or mechanical failure (see 6.3.1). 3.3 Protective finish. Protective finish shall be in accordance with the applicable specifications and drawings and shall apply to all sur
18、faces of the component regardless of configuration. Remanufactured exterior components (see 6.3.2) shall have the existing protective finish stripped and the specified protective finish reapplied. 3.4 Residual magnetism. The metal parts assembly shall not deflect the indicator of the compass more th
19、an five degrees in either direction using the procedures of 4.5.3. 3.5 Shear pin strength. The shear pin, after application of protective finish, shall shear when a load of 20 f 1 pounds is applied at the steady rate of O. 125 inch per minute. 3.6 Metal parts assembly. Parts shall be combined to pro
20、duce an assembly which conforms to the requirements of the metal parts assembly drawing. All threaded joints shall be assembled handtight. 3.6.1 Integrated plant products. When remanufacturing and loading of the assembly is performed in an integrated plant, the metal parts assembly requirement may b
21、e waived and the residual magnetism requirement performed on the loaded assembly only. 3.6.2 Threaded component parts. Class 2A or 2B thread gage shall be used on remanufactured component parts inspection versus class 3A or 3B thread gage required on new hardware for initiators. 3.7 Workmanship. Ini
22、tiators shall be fi-ee of cracks, splits, or other defects which might prevent proper mating with connecting parts or proper functioning of the device. 3.7.1 Metal defects. All components shall be free from cracks, splits, cold shuts, inclusions, porosity, or any similar defect. 3.7.2 Burr. No part
23、shall have a burr which might interfere with the assembly or function of the item or which might be injurious to personnel handling the item. 3.7.3 Foreign matter. No part or assembly shall contain chips, dirt, grease, rust, corrosion, or other foreign matter. 4. QUALITY ASSURANCE PROVISIONS 4.1 Cla
24、ssification of inspections. The inspection requirements specified herein are classified as follows: a. Conformance inspection (see 4.2). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-484 12B 4.1.2 Quality assurance terms and definitions.
25、Reference shall be made to ASQC A8402 to define the quality assurance terms used. 4.1.3 Inspections. Inspections shall be in accordance with MIL-A-2550. 4.2 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shall be performed under the following conditions: a. Temperature:
26、 room ambient (68 to 77 OF) b. Altitude: sea level c. Humidity: 50 percent relative, maximum d. Atmospheric pressure: 14.7 psi 4.3 Quality conformance inspection. 4.3.1 Lot. 4.3.1.1 Submission of product. Unless otherwise specified by the contracting activity, formation and identification of lots sh
27、all be in accordance with ASQC Z1.4. 4.3.1.2 Size of lot. The production lot size shall be as specified in the contract. 4.3.2 Examination. On reprocessed parts, one hundred percent examination shall be performed for all critical defects. Examination for major and minor defects shall be performed on
28、 a defect basis in accordance with the classification of defects. Four power (4x) magnification may be used in performing visual examination for such defects as burr and foreign matter. Inspection for rubber O-rings shall be in accordance with MIL-STD-413. When compliance with the applicable require
29、ment is in doubt as a result of visual examination, the characteristic shall be measured or gaged to determine acceptability. All nonconforming material shall be rejected. 4.3.2.1 Examination of reclaimed parts. Examination of reusable parts, which require no reprocessing, shall be limited to inspec
30、tion of defects that require visual type inspection. One hundred percent examination shall be performed for all such defects. All nonconforming parts shall be reprocessed or rejected. 4.3.2.2 Filter, Drawing 10520414, covering a detail of Drawing 10520621. Characteristics Defect Critical None define
31、d Major 101 102 103 104 105 Nylon patch not properly located or fused Metal defective Protective finish inadequate or defective Burr Foreign matter Method of Inspection ManualNisual Visual Visual Visual Visual 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
32、m IHS-,-,-MIL-DTL-484 12B Minor None defined 4.3.2.3 Chamber, Initiator, Drawing 10520407, covering a detail of Drawing 10520621. Critical None defined Major 101 102 103 104 105 106 107 108 1 o9 Pitch diameter of large external thread, min Pitch diameter of small external thread, min Pitch diameter
33、of internal thread, max Thread damaged Metal defective Protective finish inadequate or defective Surface finish inadequate or defective Burr Foreign matter Minor 20 1 Surface finish improper, except as otherwise classified 4.3.2.4 Cap, Drawing 10520473, covering a detail of Drawing 10520621. Critica
34、l None defined Major 101 102 103 104 105 106 Pitch diameter of all thread, max Thread damaged Metal defective Protective finish inadequate or defective Burr Foreign matter Gage Gage Gage Visual Visual Visual Visual Visual Visual Visual Gage Visual Visual Visual Visual Visual Minor None defined 4.3.2
35、.5 Pin, Shear, Drawing 10520622, covering a detail of Drawing 10520621. Critical None defined Major 101 102 103 104 Diameter, max Total length, min Metal defective Protective finish inadequate or defective Gage Measure Visual Visual 5 Provided by IHSNot for ResaleNo reproduction or networking permit
36、ted without license from IHS-,-,-MIL-DTL-484 12B 105 106 107 Minor Surface finish improper BLUT Foreign matter 20 1 Total length, max 202 Profile of end Visual Visual Visual Gage Gage 4.3.2.6 Pin, Firing, Drawing 10520474, covering a detail of Drawing 10520621. Critical None defined Major 101 102 10
37、3 104 105 Metal defective Protective finish inadequate or defective Surface finish of body and striker tip improper BLUT Foreign matter Visual Visual Visual Visual Visual Minor None defined 4.3.2.7 Assembly, Drawing 10520621, less all Drawings except 10520557,10520474, and MS29513-9. Critical 1 Firi
38、ng pin protrusion 2 O-ring missing Major 101 BLUT 102 Foreign matter Minor 20 1 O-ring not lubricated 4.3.2.8 Assembly, Drawing 10520621, less Drawing 10520557. Critical 1 Any part missing, except as otherwise classified Gage Visual Visual Visual Visual Visual Major None defined 6 Provided by IHSNot
39、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-484 12B Minor 20 1 202 Protective cap or plug missing Protective finish inadequate or defective Visual Visual 4.4 Inspection testing. The following tests shall be performed in accordance with 4.5. 4.4.1 Hydrostat
40、ic pressure. Each chamber and cap shall be subjected to the hydrostatic pressure test. Failure of any cap or chamber subassembly to comply with 3.2 shall be cause for rejection of the subassembly. 4.4.2 Protective finish. The number of units for protective finish tests shall be in accordance with th
41、e applicable specification. Failure of any unit in the inspection sample to comply with the requirements of the applicable specification shall be cause for rejection of the lot. 4.4.3 Residual magnetism. Each assembly shall be subjected to the test for excessive residual magnetism as specified in 4.
42、5.3. Failure of any unit in the inspection sample to comply with 3.4 shall be cause for rejection of the assembly. 4.4.4 Shear pin strength. Fifty pins fi-om each lot of shear pins shall be tested for shear strength. Failure of any shear pin to comply with 3.5 shall be cause for rejection of the lot
43、. 4.5 Test methods and procedures. 4.5.1 Hydrostatic pressure. Prior to application of protective finish the cap and chamber shall be mounted in the device, using a fixture for properly sealing all openings, and subjected to the internal hydrostatic pressure to determine compliance with 3.2. 4.5.2 P
44、rotective finish. Test procedures for protective finish shall be in accordance with the applicable specification referenced on the applicable drawing. 4.5.3 Residual magnetism. The assembly shall be tested for excessive residual magnetism using an approved compass in an area free of local magnetic e
45、ffects by placing the assembly 5 inches fi-om the end and at the same height as the compass, in a north-south horizontal position (cap end at south) with the compass set in an east-west heading. The assembly shall be moved at a speed no greater than 10 feet per minute past the compass for its entire
46、 length, rotated 90 degrees in the horizontal position about its longitudinal axis and moved slowly back past the compass. This procedure shall be repeated for each 90 degree rotation of the assembly for four full passes. 4.5.4 Shear pin strength. After application of protective finish, the pin shal
47、l be subjected to the shear pin strength test to determine compliance with 3.5. The test shall be performed in a fixture in conjunction with a tensile testing machine. 5. PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see
48、 6.2). When actual packaging of material is to be performed by DoD personnel, these personnel need to contact the responsible packaging activity to ascertain requisite packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activity 7 Provided by IHSNo
49、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-484 12B within the Military Department or Defense Agency, or within the Military Departments System Command. Packaging data retrieval is available fi-om the managing Military Departments or Agencys automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. 6. NOTES (This section contains information of a general or expla
