1、MIL-I- 5G715A( MU) 12 October 1971 SUPERSEDING MT.L-I-50715(MU) 7 May 1971 . MILITARY SPECIFICATION IflITIATOR, FBOPELWT ACTUATED, DELAY, JAU-3/A25 and Ml13 METAL PARTS ASSEMBLY 1. SCOPE 1.1 This specification covers Initiator, Propellant Actuated, Delay JAU-3/A25 and Ml13 Metal Parts Assembly. load
2、ed and used in connection with other propellant actuated devices in aircrew emergency escape systems. The assembly will ultimately be extent specified herein: SPECIFtCATION Military MIL-A-2550 MIL-1-50375 2.1 The following documents of the issue in effect on date of invitation for bids or request fo
3、r proposal, form a part of this specification to the. - Ammunition and Special Weapons, General - Initiator Propellant Actuated , U04 Specification for Metal Parts Assembly STANDARDS Military MIL-STD-105 MIL-STD-lOg MIL-STD-413 DRAWINGS Munitions Command DU731621 - Sampling Procedures and Tables for
4、 - Quality Assurance Terms and Definitions - Visual Inspection Guide for Rubber “O“ Inspection by Attributes Rings - Initiator Propellant Actuated Metal Parts Assembly Fsc i377 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.1 (Contd) Di0551447 C92
5、52573 Cg252574 IEL- 11731621 - Initiator, Propellant Actuated Metal Parts - Carton, Packing, Ammunition for Initiator, - Box, Packing Ammunition for Initiator, - Inspection Equipment List for Initiator Assembly . XM113 XM113 Propellant Actuated, Delay, Metal Parts Assembly Propellant Actuated, Metal
6、 Parts Assembly IEL- i05 51447 - Inspection Equipment List for Initiator (Copies of specifications, standands and drawings required by suppliers in connection with specific procurement finctions should be obtained from the procuring activity or as directed by the contracting officer.) specification
7、to the extent specified herein. the issue in effect on date of invitation for bid or request for proposal shall apply. 2.2 Other publications.-The following document forms a part of this Unless otherwise indicated, ASA 46.1 - Surface Texture (Application for copies should be addressed to the America
8、n National Standards Institute, i430 Broadway, New York, N.Y. 3. REQUIREMENTS 10018). 3.1 General.-Materials, parts and assemblies shall comply with the requirements specified on the applicable drawings and referenced specifications. 3.2 Mechanical Properties.-Mechanical properties required by the d
9、rawing shall be uniform throughout the part within specified tolerances, 3.3 Shear Pin Strength.-The shear pin after application of protective finish shall shear when a load of 41 + 5 pounds is applied at the steady rate of 0.125 inch per minute. - 3.4 Protective finish.-Protective finish shall be i
10、n accordance with the applicable specifications and drawings and shall apply to all surfaces of the component regardless of contour. 3.5 Residual magnetism.-The metal parts assembly shall not deflect the indicator of the compass more than 3 degrees in either direction when passed in front o? the com
11、pass at a distance of 6 inches. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.6- Workmanship, -The requirement for workmanshiy is as specified on the applicable drawings, referenced specifications and the following:- 3.6.1 Metal defects.-The co
12、mponent shall be free from cracks, splits, cold shuts, inclusions, porosity or other metal defects. 3.6.2 Burr.-The part shall not have a burr which might interfere with - the assembly or function of the item or which mightbe injurious to personnel handling the item. 3.6.3 Foreign matter.-The part o
13、r assembly shall not contain chips, dirt, grease, oil, rust, corrosion or other foreign matter, 4. QALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.-Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requiremen
14、ts as specified herein. specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection reauirements Except as otherwise specified herein, unless disapproved by the Government, - The GoverAent reserves the right to perform any o
15、f the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1,l Quality assurance terms and definitions .-Reference shall be made to MIL-STD-lo9 +o define the quality assurance terms used, 4.1.2 In
16、spection.-Inspection shall be in accordance with MIL-A-2550. 4.2 First article sample. 4.2.1 Initial production sample.-At the beginning of regular production, the contractor shall submit an initial producion sample to a Government approved facility for evaluation in accordance with contract require
17、ments and shall consist of 50 shear pins from each lot of shear pins inspected by the contractor for shear pin strength, 5 assemblies and 10 sets of un- assembled components for visual and dimensional examination and tests. The sample shall be manufactured using the same materials, equipment, pro- c
18、esses and procedures as used in regular production. including packaging and packing, shall be the same as used for regular production and shall be obtained from the same source of supply. acceptance at source, the sample shall be inspected for all requirements All parts and materials, 4.2:l.l Examin
19、ation and test.-After examination and provisional 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I- 507l5A(MU) 4.2,1,1 .(Contd) .: ,-: *.a of the drawings .and specifications at a Government laboratory or such other facility specified in the c
20、ontract . 4.2.1,2 Initial production failure.-Failure of the sample to comply with the requirements of the drawings and specifications shall result in sample disapproval. .- - . 4.3 inspection provisions, 3 . _- r *. -. *. *. !r- 4.3.1 Lot. - - 4.3.1.1 Submission of product;-The product shall be sub
21、mited in accordance with MIL-STD-105. 4.3.3.2 Size of lot.-An ammunition lot shall consist of a group of metal parts assemblies produced by a homogeneous process. 4.3.2 Examinat ion. -One hundred percent examination shall be performed -. -. for.all critical defects. Examination for major and minor d
22、efects shall be performed on a defect basis in accordance with the classification of defects contained herein, using the sampling plans and criteria in tables I and IL. For an individual defect (single characteristic) the criteria in table I shall be used. For total defects within a major or minor g
23、roup, the criteria in table II shall be used. All non-conforming material shall Fe rejected. MIL-STD-413. shall be used as a basis of comparison for surface roughness determination. Four power (4X) magnificatLon may be used in performing visual examination for such defects as burr and foreign matter
24、; -. 5 . . Inspection for rubber O-rings shall be in accordance with The surface roughness specimens prescribed in ASA 46.1 I. -. o. a- i q. . : . . - TABLE I 0 ?: MAJOR MINOR c. . .; Lot Size Sample Size Accept Reject Accept Reject 5 L. 8001-22000 106 examination - 110 -1 150 2 225 3 300 4 4 . *.*
25、- 2 5 - 2 3 -4 5 3 4 5 6 6 L Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-I-50715A 13 m 7777906 0426775 2 m MIL-I- 50715A(MU) .- TABLE II Total Allowable Defects Per Sample Size Sample. Sizes for Major Defects 110 150 225 300 No. Defects in C
26、lass 2- 3 4-7 8- i9 20-43 Over 43 Sample Size for Minor Defects No. Defects in Class 2- 3 4- 7 8- 16 17-48 Over 48 4.3.2.1 1 2 3 4 2 3 4 5 3 4 5 7 4 5 8 10 6 8 11 i4 110 150 225 300 2 3 3 4 4 5 6 8 8 11 4 5- 5 7 8 10 11 i4 17 20 Housing, Dwg. DU731622 covering a detail of Dwg. I111731621 Def ec Meth
27、od of Inspection CRITICAL 1. Metal defective Visual MAJOR 101. 102. 103. 104. 105. 106. 107. io8 ,. log Pitch diameter of external thread, min. Major diameter of external thread, min. Pitch diameter of internal thread, max. Major diameter of internal thread, max. True position of pitch diameter of e
28、xternal thread with outer diameter of body, small end Concentricity of center hole with center cavity Concentricity of pitch diameter of internal thread, Concentricity of pitch diameter of internal thread Perpendicularity of base of center cavity with wall at large end with center cavity at small en
29、d with center cavity of center cavity Gage Gage Gage Gage Gage Gage Gage Gage Gage 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Defect e Method of Inspection MAJOR 110 . 111. 112. i13 114. 115 . 116 . 117 . 118 . 119 o 120. 121 o 122. 123. 124.
30、125. 126 . 128 . 129. 127 130. MINOR 201. 202. 203 204 . 205. 206 . 207 208. 209 . 210 . 211. Perpendicularity of cavity ba- at large end wit True position of shear pin hole with center cavity True position of wrench flats with pitch diameter Diameter of shear pin hole Diameter of shear pin hole cou
31、nterbore Diameter of center hole, min. Diameter of counterbore, large end, max. Diameter of shoulder Depth of shear pin hole counterbore Depth of shear pin hole Length of internal threads both ends, min. Width of thread undercut Location of shear pin hole Thickness of wall between cavities Depth of
32、cavity, large end Diameter of center cavity Diameter of counterbore small end Protective finish inadequate or defective Surface finish improper in center cavity and chamfer at mouth, each end Burr or sharp corner Foreign matter pitch diameter of the internal threads of internal thread at small end P
33、itch diameter of internal thread, min. Pitch diameter of external thread, max. Diameter of center hole, max, Diameter of small end Minor diameter of cavity, large end Minor diameter of cavity, small end Diameter of counterbore, large end, min, Diameter of counterbore, small end Diameter of chamfer,
34、large end Diameter of chamfer, small end Diameter of body, large end Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Vi sua1 Visual Vigual Visual Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage 6 Provided by IHSNot for ResaleNo reproduction or networking p
35、ermitted without license from IHS-,-,-MIL-I-50715A 13 W 777770b 042b777 b W 4.3.2.1 (Contd) Defect MIITOR 212. 213 e 214 e 215 e 216. 219 217 . 218 . 220. 221 e 222 e Diameter of shear pin hole, min. Diameter across wrench flats Depth of counterbore, large end Depth of counterbore, small end Depth o
36、f bore, small end Length to shoulder, small end Total length Thickness of shoulder Location of external thread Radius or chamfer missing or incorrect Surface finish improper , except as otherwise classified MIL-I- 59715A(MU) Method of Inspection Gage Gage Gage Gage. Gage Gage Gage Gage Gage Visual V
37、i sual 4.3.2.2 Pin, Shear, Dwg. B1052475, covering a detail of Dwg. DU731621 CRITICAL None defined MAJOR 101. Diameter, max. 102. Total length, min. 103. Metal defective 104. 105. Surface finish improper 106. Burr L07. Foreign matter Protective finish inadequate or defective MINOR 201. Total length,
38、 max. 202. Profile of end 4.3.2.3 Bracket, Mounting Dwg, ci1731624 covering a detail of Dwg . D11731621. Gage Gage Visual Visual Vi sual Visual Visual Gage Gage CRITICAL 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.- - -. _ MIL-I-50715A 13 W 99
39、99906 0426778 8 W T T MIL-I-50715A( MU) 4.3.2.3 (Contd) Defect . I e Method of Inspection MAJOR 101. 102. 103. Diameter of mounting holes 104. 105. 106. Pitch diameter of internal thread, max. Major diameter of internal thread, min. Length of mounting holes centers Height from base to thread hole ce
40、nter Length from shoulder to thread hole center 107. 108. 109. 110 111. MINOR 201. 202. 203. 204. 205. 206. 207. 2080 209 210 0 2u. 212. Shoulder radius incorrect Width of shoulder Protective finish inadequate or defective Burr or sharp corner Foreign matter Pitch diameter of internal thread, min. M
41、inor diameter of internal thread, max, Total base length Width of mounting surface (base) Height from base to top of shoulder Thickness of base Length from center line to base end Mounting hole location Length of base relief Depth of base relief Base relief location incorrect Angle of base relief in
42、correct 213, Radius, angles, or chamfers Mssing or incorrect 214. Surface finish improper 4.3.2.4 Pin, firing, Dwg. C10520474, covering a detail of Dwg , 731621. None defined MAJOR 101. 102. Concentricity of striker with body Concentricity of groove with body Gage Gage Gage Gage Gage Gage Gage Gage
43、Visual Visual Visual Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Visual Gage Gage 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-507LCA 13 777770b 0q2b777 T 4.3.2.4 (Contd) Defect Method of Inspection MAJOR 103. 104. 105
44、. 106. 107. 108. 109. 110. 111. 112. 113. 114. 115 MINOR 201. 202 204. 203. 205. 206. 207. 200. 209. Symmetry of pin hole with body Diameter of striker Diameter of body Diameter of groove Diameter of pin hole Depth of pin hole Length of striker, min. Location of pin hole Metal defective Protective f
45、inish inadequate or defective Surface finish of body improper Burr or sharp corner Foreign matter c Total length Depth of slot Length of striker, max. Location of groove Width of slot Width of groove Location of slot Radius or chamfer missing or incorrect Surface finish improper, except as otherwise
46、 classified Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Visual Visual Gage Gage Gage Gage Gage Gage Gage Visual Visual 4.3.2.5 Components.-Component parts of this metal parts assembly shall conform to the requirements specified in MIL-1-50375. 4.3.3 Inspection testing.-The following tests
47、 shall be performed in accordance with the provisions of 4.4. 4.3.3.1 Shear pin strength.-Fifty pins from each lot of shear pins tested by the contractor shall be tested for shear strength. pin to comply with the requirements of 3.3 shall be cause for rejection of the lot. Failure of any -. 4.3.3.2
48、Protective finish,-The number of units for protective finish tests shall be in accordance with the applicable specifications, of any sample to comply with the requirement of 3.4 and the applicable specificaion shall be cause for rejection of the lot. Failure 9 Provided by IHSNot for ResaleNo reprodu
49、ction or networking permitted without license from IHS-,-,-MIL-I-50725A 23 W 777770b 042b780 b ._ c -1 MIL-I- 50715A(MU) 4.3.3.3 Residual nagnetism.-Each assembly shall be subjected to the Failure of any assembly to comply test for excessive residual magnetism, with the requirements of 3.5 shall be cause for rejection of the assembly . 4.3.4 Inspection equipment.-The examinatio
