1、 INCH-POUND MIL-R-82689 17 May 1994 SUPERSEDING FA-PD-MI-2273 27 September 1960 MILITARY SPECIFICATION RELEASE, FIRING PIN, GAS ACTUATED, M1A1 ASSEMBLY This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers t
2、he requirements for the M1A1 Gas Actuated Firing Pin Release (see 6.1). 2. APPLICABLE DOCUMENTS 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
3、 of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplements thereto, cited in the solicitation (see 6.2). SPECIFICATIONS MILITARY MIL-A-2550 Ammunition, General Specification For STANDARDS MILITARY MIL-STD-105 Sampling
4、 Procedures And Tables For Inspection By Attributes MIL-STD-109 Quality Assurance Terms And Definitions MIL-STD-129 Marking for Shipment and Storage Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed t
5、o: Commander, Indian Head Division, Naval Surface Warfare Center, Standardization Branch (Code 3730), 101 Strauss Avenue, Indian Head, MD 20640-5035, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by sending a letter. AMSC N/A FSC 1
6、377 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-82689 2MIL-STD-453 Inspection, Radiographic MIL-STD-1168 Ammunition Lot Numbering (Unless otherwise indicated,
7、 copies of federal and military specifications and standards are available from Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 Other Government documents, drawings, and publications. The following Government drawings form a part of this specif
8、ication to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation (see 6.2). DRAWINGS Indian Head Division, Naval Surface Warfare Center (CAGE Code 19200) DL5184966 Release, Firing Pin, Gas Actuated, M1A1 U.S. Air Force SPI 00-731-9272 Release, Firing
9、 Pin, Gas Actuated, M1A1 (Application for copies should be addressed to: Commander, Indian Head Division, Naval Surface Warfare Center, 101 Strauss Avenue, Data Control Branch (Code 3720), Indian Head, MD 20640-5035.) 2.2 Order of precedence. In the event of a conflict between the text of this docum
10、ent and the references cited herein, 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 First article. When specified in the contract or purchase order (see 6.2),
11、 a sample shall be subjected to the first article inspection (see 4.4 and 6.3). 3.2 Materials. All materials used in the manufacture of the removers and release mechanisms shall conform to the specifications referred to on the respective drawings unless specific approval in writing covering a depart
12、ure therefrom has been obtained from the cognizant Navy design activity prior to manufacture. When alternate materials or methods of manufacture are specified on the drawings, the bidders selections shall be clearly stated in the proposal. 3.3 Hardness and other physical properties. Hardness and oth
13、er physical properties required by the drawing shall be uniform throughout the part within specified tolerances. Requirements for all alloy steel parts shall be achieved by quenching and tempering. 3.4 Hydrostatic pressure. The cylinder and housing shall withstand an internal hydrostatic pressure of
14、 7,500 pounds per square inch (psi) for a minimum of 30 seconds without deformation or mechanical failure (see 6.4.1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-82689 33.5 Protective finish. Protective finish shall be in accordance with t
15、he applicable specification and drawings and shall apply to all surfaces of the component regardless of contour configuration and includes internal surfaces. Special internal electrodes may be required to get the proper internal coating. 3.6 Radiographic inspection. Each release shall be radiographi
16、cally examined for defects (see 4.5.3.7). 3.7 Metal parts assembly. When the firing pin release metal parts assembly is complete, except for the dust seal, the operating rod shall remain extended in the locked position while complying with the following conditions: a. The operating rod shall be free
17、 to rotate 360 degrees with respect to the assembly and there shall be no evidence of binding or intermittent resistance to rotation, resulting from variation in the locking components or the presence of foreign matter. b. The metal parts assembly shall be free to rotate 360 degrees with respect to
18、the operating rod under a load application of 20 pounds. Load application shall be in the direction tending to cause retraction of the operating rod along the central axis of the assembly. c. After rotation under load, the operating rod shall be free to rotate 360 degrees with respect to the assembl
19、y and there shall be no evidence of binding or intermittent resistance to rotation. 3.8 Functioning. When the operating rod of the assembled firing pin release is held firmly and a gas source having a maximum pressure of 250 psi is applied to the housing gas intake port, the firing pin release body
20、and cylinder assembly shall move completely over the release operating rod. The operating rod shall be returned to the original extended position. Complete and positive locking shall be assured. 3.9 Breakaway torque. The cylinder of each firing pin release assembly, prior to sealing of the four cyli
21、nder holes, shall withstand a breakaway torque of 50 inch pounds with respect to the firing pin release housing. 3.10 Residual magnetism. The firing pin release assembly shall not deflect the indicator of the compass more than five degrees in either direction using procedures in 4.6.4. 3.11 Workmans
22、hip. Releases shall be free of cracks, splits, or other defects which might prevent proper mating with connecting parts or proper functioning of the RAU-3/A Remover. 3.11.1 Metal defects. All components shall be free from cracks, splits, cold shuts, inclusions, porosity, or any similar defect. 3.11.
23、2 Burr. No part 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. 3.11.3 Foreign matter. No part or assembly shall contain chips, dirt, grease, rust, corrosion, or other foreign matter. Provided by IHSNot for
24、 ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-82689 43.11.4 Threads. Threads shall be full and undamaged for the entire minimum length or depth as required by MIL-A-2550. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified
25、 in the contract or purchase order, the contractor is responsible for the performance of all inspection 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
26、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 this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed req
27、uirements (see 6.2). 4.1.1 Responsibility for compliance. All items shall meet all requirements of 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 s
28、pecification shall not relieve the contractor of the responsibility of ensuring that all products 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 conf
29、ormance to requirements; however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. 4.1.2 Quality assurance terms and definitions. Reference shall be made to MIL-STD-109 to define the qua
30、lity assurance terms used. 4.1.3 Inspections. Inspections shall be in accordance with MIL-A-2550. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.4) b. Quality conformance inspection (see 4.5) 4.3 Inspectio
31、n conditions. Unless otherwise specified (see 6.2), all inspections shall be performed under the following conditions: a. Temperature: room ambient (68 to 77F) b. Altitude: sea level c. Humidity: 50 percent relative, maximum d. Atmospheric pressure: 14.7 psi 4.4 First article inspection. At the begi
32、nning of regular production, the contractor shall submit an initial production sample to a Government approved facility for evaluation. The sample shall consist of five metal parts assemblies, nine sets of unassembled parts, and one set of unassembled parts without plating or final protective finish
33、. The sample shall be manufactured in the same manner, using the same materials, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-82689 5equipment, processes, and procedures as used in regular production. All parts and materials, including packa
34、ging and packing, must be the same as will be used for regular production and shall be obtained from the same source of supply. After inspection and provisional acceptance at source, the first article sample shall be inspected for all requirements of the drawings and specifications. The Government r
35、eserves the right to require new first article samples until an acceptable sample is submitted (see 6.3). 4.5 Quality conformance inspection. 4.5.1 Lot. 4.5.1.1 Submission of product. Unless otherwise specified by the contracting activity, formation and identification of lots shall be in accordance
36、with MIL-STD-105. 4.5.1.2 Size of lot. The production lot size shall be as specified in the contract. 4.5.2 Examination. One hundred percent examination shall be performed for all critical defects. Examination for major and minor defects shall be performed on a defect basis in accordance with the cl
37、assification of defects. Four power (4x) magnification may be used in performing visual examination for such defects as burr and foreign matter. When compliance with the applicable requirement is in doubt as a result of visual examination, the characteristic shall be measured or gaged to determine a
38、cceptability. All nonconforming material shall be rejected. 4.5.2.1 Cylinder, Drawing 5184973, covering a detail of Drawing 5184966. Characteristics Defect Method of Inspection Critical None defined Major 101 Pitch diameter of thread, max Gage 102 Minor diameter of thread, max Gage 103 Concentricity
39、 of counterbore with pitch diameter of thread Gage 104 Concentricity of cavity with pitch diameter of thread Gage 105 Perpendicularity of seat of counterbore to seat of cavity, min Gage 106 Diameter of counterbore, max Gage 107 Diameter of cavity, max Gage 108 Depth to seat of counterbore, min Gage
40、109 Depth to counterbore, max Gage 110 Depth to seat of counterbore to seat of cavity, min Gage 111 Wall thickness, min Gage 112 Metal defective Visual 113 Protective finish inadequate or defective Visual Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
41、-,-MIL-R-82689 6Minor 201 Pitch diameter of thread, min Gage 202 Diameter of counterbore, min Gage 203 Diameter of cavity, min Gage 204 Diameter of recess at seat of cavity Gage 205 Diameter of exhaust holes Gage 206 Diameter of shoulder Gage 207 Depth to seat of counterbore, max Gage 208 Depth of c
42、ounterbore, min Gage 209 Depth from seat of counterbore to seat of cavity Gage 210 Length of effective thread, min Gage 211 Total length Gage 212 Thickness of base Gage 213 Wall thickness, max Gage 214 Radial location of exhaust holes Gage 215 Diameter of ineffective thread or undercut Measure 216 L
43、ength of shoulder Measure 217 Radius missing or illegible Visual 218 Thread damaged or not full Visual 219 Burr Visual 220 Foreign matter Visual 4.5.2.2 Housing, Drawing 5184967, covering a detail of Drawing 5184966. Critical None defined Major 101 Pitch diameter of large thread, min Gage 102 Major
44、diameter of large thread, min Gage 103 Pitch diameter of gas port thread, min Gage 104 Major diameter of gas port thread, min Gage 105 Concentricity of hole in gas port with small thread Gage 106 Concentricity of boss with cavity Gage 107 Concentricity of cavity with pitch diameter of large thread G
45、age 108 Perpendicularity, face of flange with cavity Gage 109 Perpendicularity, face at open end with cavity Gage 110 Symmetry of flats behind flange with boss Gage 111 Symmetry of mounting holes with boss Gage 112 Diameter of small cavity Gage 113 Diameter of large cavity Gage 114 Diameter of gas p
46、ort holes Gage 115 Diameter of undercut, min Gage 116 Diameter of gas port holes Gage 117 Depth of cavity to rod hole Gage Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-82689 7118 Depth of cavity to internal shoulder, min Gage 119 Length of l
47、arge thread pilot, max Gage 120 Wall thickness, min Gage 121 Location of rod hole Gage 122 Diameter of rod hole, min Measure 123 Location of gas port hole Measure 124 Thread damaged or not full Visual 125 Metal defective Visual 126 Protective finish inadequate or defective Visual 127 Surface finish
48、improper Visual 128 Burr Visual 129 Foreign matter Visual Minor 201 Pitch diameter of large thread, max Gage 202 Pitch diameter of gas port thread, max Gage 203 Diameter of boss Gage 204 Diameter of pilot, large end Gage 205 Diameter of mounting holes Gage 206 Diameter of gas port thread, pilot, max
49、 Gage 207 Length from open end to face of flange Gage 208 Length to end of large thread Gage 209 Length of flat behind flange, min Gage 210 Length of large thread, pilot, min Gage 211 Length to gas port thread Gage 212 Length of flat and flange Gage 213 Width of flange Gage 214 Width of undercut Gage 215 Width across flats behind flange Gage 216 Location of datum diameter Gage 217 Location of mounting holes Gage 218 H
