1、MIL-I-6557B 13 7777906 0413731 5 I - _- I INCH-POUND I 31 January 1990 1 SUPERSEDING 30 July 1969 and Amendment 1 16 July 1973 MJL-I-46559B MIL-I4559A(MU) MILITARY SPECIFICATION INITIATOR, CARTRIDGE ACIUAJTD, M3A2, METAL PARTS ASSEMBLY This specificrition is approved for use by all Departments and A
2、gencies of the Departrnent of Defense. 1, SCOPE 1.1 Scope. This specification covers the requirements for the M3A2 Cartridge Actuated Initiator Metal Parts Assembly (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specificatio
3、n, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards ODISS and supplement thereto, cited in the solicita
4、tion (see 62). SPECIFICATIONS MILITARY 9 MIL-A-2550 Ammunition, General Specification For STANDARDS MILITARY MIL-STD-105 MIL-STD-109 MIL-STD-413 Sampling Procedures and Tables for Inspection by Attributes Quality Assurance Terms and Definitions Visual Inspection Guide for Elastomeric O-rings (Unless
5、 otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from Military Specifications and Standards, Bldg 4D, 700 Robbins Avenue, Philadelphia, PA 191l-5094.) Beneficial comments (recommendations, additions, deletions) and any pertinent data which m
6、ay be of use in improving Ulis document should be addressed to: Commanding Officer, Naval Ordnance Station, Standardization Branch (3730), Indian Head, MD 20640-5000, by using the self-addressed Standardization Document improvement Proposal (DD Fonn 1426) appearing at the end of this document or by
7、letter. AMSC N/A . FSC 1377 DISTRIBUTION !STATEMENT A. Approved for public release; distribution is unlimited. ,. - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 NIL-I-LIb554B 13 Y?a MIL-I-46559B 2.1.2 Other Government documents, drawings, and pu
8、blications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless other- wise specified, the issues are those cited in the solicitatlon. DRAWINGS NAVAL ORDNANCE STATION, INDIAN HEAD, MD (CAGE Code 19200 and 19203) 859
9、5822 8796541 8796542 9216934 Initiator, Cartridge Actuated, Metal Parts Assembly Box, Fiberboard (Inner) Packing, Ammunition, for Initiator, Cartridge Actuated, M3A2 or M5A2 Box, Packing, Ammunition, for Initiator, Cartridge Actuated, M3A2 or M5A2 Box, Fiberboard (Outer) Alternative Packing, Ammunit
10、ion, for Initiator, Cartridge Actuated, M3A2 or M5A2 3 U.S. AIR FORCE TPO 00-932-5031 Initiator, Cartridge Actuated, M3A2 (Application for copies should be addressed to: Commanding Officer, Naval Ordnance Station, Data Control Branch (Code 3720), Indian Head, MD 20640-5000.) 2.2 Order of precedence.
11、 In the event of a conflict between the text of this document 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. REQUIREMENT3 a 3.1 Materials. All
12、 materials used in the manufidure of the initiators shall conform strictly to the specifications referred to on the respective drawings unless specific approval in writing covering a departure therefrom has been obtained from the cognizant Navy design activity prior to manufacture. When alternate ma
13、terials or methods of manufacture are specified on the drawings, the bidders selections shall be clearly stated in the proposal. 3.2 First article, When specified in the contract or purchase order (see 6.2), a sample shall be subjected to first article inspection (see 4.4 and 6.3). 3.3 Raw material.
14、 The contractor shall be responsible for selecting from the classification list contained in the raw material specification the surface and physical condition of the raw material intended for use in manufacture. 3.4 Physical properties. Physical properties required by the drawing shall be uniform th
15、roughout the part within specificed tolerances. Requirements for all alloy steel parts shall be achieved by quenching and tempering. 3.5 Hydrostatic pressure. The subassembly consisting of a cap, chamber, and plug simulating the firing pin housing, without firing pin hole and with an O-ring, shall w
16、ithstand a constant internal pressure of 5500 to 6500 pounds per square inch (psi) for 15 seconds, minimum (min), without application of any external load other than that applied by the liquid pressure and shall show no evidence of leakage or mechanical failure (see 4,6.2). 1 3.6 Firing pin release.
17、 The firing pin of the assembled initiator, less safety pin, cartridge, cartridge retainer, and chamber, shall release from the cocked position when the application of an axial load of 20 to 35 pounds has withdrawn the initiator pin 34 inch, maximum (max). O 2 Provided by IHSNot for ResaleNo reprodu
18、ction or networking permitted without license from IHS-,-,-MIL-I-46559B 13 U 777970b 0433733 9 I MIL-I-46559B 3.7 Initiator pin security. The initiator pin of the assembled initiator, less cartridge, cartridge reainer, and chamber, shall not withdraw beyond the safety pin when subjected to an axial
19、load of 2W to 220 pounds. Application of the load shall not cause permanent deformation of the safety pin. 3.8 Metal parts assembly. Parts shall be combined to produce an assembly which conforms to the requirements of the metal parts assembly drawing. All threaded joints shall be assembled handtight
20、. a 3.9 Protective finish. Protective finish shall be in accordance with the applicable specifications and shall apply to all surfaces of the component regardless of contour configuration. 3.1 Residual magnetism. The metal parts assembly shall not deflect the indicator of the compass more than tve d
21、egrees in either direction using the procedures in 4.6.6 3.11 Workmanship. The requirements for workmanship are as specified on the applicable drawings, referenced specifications, and the following: 3,.l Metal defects. All components shall be free from cracks, splits, cold shuts, inclusions, porosit
22、y, or any similar defect. 3.11.2 Burr. No part shall have a burr which might interfere with the assembly or function of the item of which might be injurious to personnel handling the item. 3.l.3 Foreign matter. No part or assembly shall contain chips, dirt, grease, rust, corrosion, or other foreign
23、matter. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order (see 6.2), the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specif
24、ied 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 hy the Government. The Government reserves the right to perform a9 of the inspections set forth in the specif
25、ication where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items shall meet all requkements of sections 3 and 5. The inspection set forth in this specification shall become a part o the contractors
26、overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the conactor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampli
27、ng inspection, as part of manufacturing operations, is an acceptable practice to ascertan conformance 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. 4.12 Quali
28、ty assurance terms an? definitions. Reference shall be made to MIL-STD-109 to define the quality assurance terms used. 4.1.3 Inspection. Inspection shall be in accordance with MIL-A-2550. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-lIL-I-46559B
29、 13 W 997790b 0433734 O W MIL-I-46559B 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 Inspection conditions. Unless otherwise specified, all inspections
30、shall be performed under the follow- ing conditions: a. Temperature: Room ambient 68 to 77 OF b. Altitude: Sea level c. Humidity: 50 percent relative, max d. Atmospheric pressure: 14.7 psia. 4.4 First article Inspection, At the beginning of regular production, the contractor shall submit an initial
31、production sample to a Government approved facility for evaluation. The sample shall consist of 5 metal parts assemblies, 9 sets of unassembled parts, 1 set of unassembled parts without plating or final protective finish, and 50 shear pins from the same lot of shear pins tested by the contractor. Th
32、e sample shall be manufactured in the sanie manner, !sing the same materials, equipment, processes and procedures as used in regular production. All parts and materials, including packaging and packing, must be the same as will be used for regular production and shall be obtained from the same sourc
33、e 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 reserves the right to require new first article samples until such time as an acceptable sample is submitted (see 6.
34、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 with MIL-STD-105. 451.2 Size OP lot. For the purpose of identification and shipment, the shipping lots
35、 of metal parts assemblies sliall consist of 1200 initiators, max, provided the homogeneity requirements of inspection lots have been retained. 4.5.2 Examination. One-hundred percent examination shall be performed for all critical defects. Examination for major and minor defects shall be performed o
36、n 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 ap- plicable requ
37、irement is in doubt as a result of visual examination, the characteristic shall be measured or gaged to determine acceptabilky. 4.5.2.1 Retainer, Cartridge, Drawing 8593013, covering a detail of Drawing 8595822. Cliaracteristic Defect Method of Inspection Critical 1 Metering slots in base missing Vi
38、sual 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-4b557B 33 7779706 0433735 2 Characteristic Defect MIL-I-46559B Major 101 102 103 104 105 106 107 108 109 110 111 112 113 114 Il5 116 u7 118 119 120 Minor 201 202 203 204 20s 206 207 208 209
39、 210 211 212 213 214 Pitch diameter of thread, max Minor diameter of thread, max Concentricity of cavity with pitch diameter of thread Perpendicularity of pitch diameter of thread with base Symmetry of metering slots in base with body Diameter of cavity, max Depth of cavity Depth of bottom of counte
40、rbore Depth of metering slots in base Total length Length of effective thread, min Width of metering slot, on base Internal radius at mouth of cavity missing or incorrect Drill point on base, max Number of elongated slots incorrect Thread damaged or not full Metal defective Protective finish inadequ
41、ate or defective Burr Foreign matter present Pitch diameter of thread, min Diameter of body Diameter of cavity, min Diameter of head Length of elongated slots Length of head Width of elongated slots Location of elongated slots Angle between head and body Location of metering slots Profile of elongat
42、ed slots Marking missing, incorrect, or illegible Radius missing or incorrect, except as otherwise classified Surface finish improper except as otherwise classified Method of Inspection Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Visual Visual Visual visual Visual Visual Ga
43、ge Gage Gage Gage Gage Gage Gage Gage Gage Visual Visual Visual Visual Visual 4.5.2.2 Chamber, Drawing 8593014 covering a detail of Drawing 8595822. Critical None defined Major 101 Pitch diameter of large thread, min Gage 102 Major diameter of large thread, min - Gage O 103 Pitch diameter of small t
44、hread, min Gage o 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- NIL-I-46557B 23 7797706 Oq23736 4 M MIL-I-46559B Characteristic Defect 104 105 106 107 108 109 110 111 112 113 114 115 116 117 ,118 Minor 201 202 203 204 205 206 207 208 209 210 211
45、 212 213 214 215 216 Major diameter of small thread, min Concentricity of counterbore with pitch diameter of large thread Concentricity of datum diameter with small thread Diameter of counterbore Depth of cavity Thickness of wall, min Location of datum diameter Profile of gas port Thread damaged or
46、not full Chamfer at base of cavity missing or incorrect Metal defective Protective finish inadequate or defective Surface finish at end of gas port improper Burr Foreign matter present Pitch diameter of large thread, max Pitch diameter of small thread, max Diameter of cavity Diameter of hole Diamete
47、r of small thread pilot Diameter of large thread pilot Depth of counterbore Total length Length of large thread pilot Length of end of large thread Length of gas port Thickness of wall, max Location of small thread Marking missing, incorrect, or illegible Radius or chamfer missing or incorrect Surfa
48、ce finish improper, except as otherwise classified 4.5.2.3 Pin, Initiator, Drawing 8595403, covering a detail of Drawing 8595822. Critical None defined Major 101 102 103 Diameter of body 104 105 106 107 Concentricity of groove in head with body Symmetry of head with body Diameter of groove in body,
49、min Diameter of groove in head, min Length to shoulder at head, min Location of groove in head Method of Inspection Gage Gage Gage Gage Gage Gage Gage Gage Visual Visual Visual Visual Visual Visual Visual Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Visual Visual Visual Gage Gage Gage Gage Gage Gage Gage 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-I-
