1、.r ic - MIL-P-46423B 33 779970b 0333735 - 4 I -. i i I / s-37-19 MIL-g46421B (PA) 10 July 1975 SUPERSEDING 30 April 1964 MIL-P-46421A CI) MILITARY SPECIFICATION PRIMER, PERCUSSION, M57 *. METAL PARTS FOR This specification is approved for use by all Departments and Agencies of the Department of Defe
2、nse. 1. SCOPE 1.1 This specification covers the metal parts for one type of percussion primer designated as Primer, Percussion, M57. 2. APPLICABLE DOCUMENTS 2.1 - The following documents of the issue an effect on date . of invitation for bids or request for proposal, form a part .of this specificati
3、on to the extent specified herein, SPEC IF1 CATIONS NIIL ITA RY MIL-A-2550 - Ammunition and Special Keapons, , General Specificatian for . STANDARDS MILITARY MIL-STD-105. - Sampling PrQcedures and Tables- for - - Inspection by Attributes MIL-STD-109 - Quality. Assurance Terms and Definitions MIL-STD
4、-1168 - Ammunition Lot Numbering NIL-STD-1169 - Packaging, .Packing and Marking for Shipment of Inert Animunttion Components MIL-STD-1235 - Single and Multilevel Continuous. Sampling Procedures and Tables for Inspection by Attributes FSC: 1390 i I. I . . fl THIS DOCUMENT CONTAINS /I PAGES. I Provide
5、d by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-46421B 13 W 737770b 0311736 b I f MIL-P-46421B (PA) DRAWINGS Anrm 8338012 - Cup, Battery 8838015 - Plug, Firing 8338016 - Metal Parts Assembly (Copies of specifications, standards, drawings and publicati
6、ons required by suppliers in connection with specific procurenient functions should be obtained from the procuring activity. or as directed by the contracting officer). I 3. PQUIREMENTS 3.1 Material.-Materials shall be In accordance with. applicable drawings and specifications . 3.2 Metal parts,-The
7、 metal parts shall coinply with all requirements specified on Drawings Cdwgs . Z 883801.2,. 8838015 and 88380iG, and with all requirements specified in applicable specifications. Hydrostatic test.-The primer tubing shall withstand the application of a minimum Cmin. ) hydrostatic .pressure without .
8、rupture or indication of flaws, as evidenced hy leaks and without permanent deformation beyond drawing requirement s, when tested as specified in 4.4.1 (see 6.3.1. Strength of brazed joint.-The brazed joint securing the head and body shall withstand a pull of 5500 pounds -wi-thout evidence of separa
9、tion, when tested as specified in 4.4i.2 I- 3.3 3.4 3.5 Workmanship.-All parts shall b fabricated and finished in a thorough, workmanlike manner. They shall be -clean and - free of burrs, sharp edges, unblended radii, surface defects, cracks, chips, dirt, grease, rust and other foreign matt The clea
10、ning method used shall not be injurious to any parts nor shall the parts be contaminated by the cleaning agent. 3.6 First article inspection.-This specification makes provision for first article inspection. Requirements for the submission of h first article samples by the contractor shall be as spec
11、ified in the contract . . - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. . . . . . . . 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection.-Unless otherwise specified in the contract or purchase order, the supplier is responsible f
12、or the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract .or order, the supplier may use his own or any other facilities suLtable for the perform- ance of the inspection requirements specified hepein, unless dia- approve by the Government;.
13、 In addition, the Government reserves the right to perfom any of the inspections set forth in the spec The initial production sample shall consist of C25.1 twenty-five complete set of parts (i.e,(252 twenty.-five each of every component) which have been produced by the contpactor or furnished by a s
14、upplier and which has been manufactured using the same . production processes, procedures and equipment which will 4e used in fulfilling the contract. All parts and materials, including packaging and packing shall be obtained from the same sources I L of supply as will be used in regular productton.
15、 .The sample shall be accompanied by certificates of analysis for materials. An initial production sample, or portion thereof, as directed by the contracting officer, shall also be submitted whenever there is a lapse in production for a period in excess OC PO .days, or whenever a -change occurs in m
16、anufacturing process? material used, drawing, specification or source of supply as to significantly affect product uniformity 8s determined By th6 Qovernment: Prior to subrilission, the contractor shall inspect th.e saniple to the degree necessary to assure that it conforms to the requipenients of t
17、he contract and submit a record of this inspection with the sample. A sample containing known defects will not he submitted unless specifically authorized by the contracting officer. Inspections to be performed.-Components will be. subjected by the Governmen6 to any or all of the examinations r 4.2.
18、2 I 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-46LIZLB 13 W 9999906 031L93 T W -I MIL-P-46 42 1B 4PA) 9 or tests specified in 4.3.2 and 4.3.3 of this specification and any or all requirements of the applicable drawings. any of the applic
19、able requirements, the initiai production sample shall be rejected. Th.e Cfoverment . reserves the right to terminate its inspection upon any failuze of a component in the sample to comply with any of the stated requbrements. -In the event of rejection, the Government reseryes the right to require t
20、he contractor to take corrective. ctzon .and submit a new initial production sample or portion thereof. Until an initial production is accepted, the contractor is in no way authorized by the Government to initiate regular production unless atheruise directed by the contracting officer. . 4.2.3 Rejec
21、tion.-If any component fails to comply with 4.3 fispection provisions 4.3.1 inspection Lot Formation.4he term tf$.nspectQn lotit. . is defined as a homogeneous collection of units: of product from which a representative sample is drawn or which is inspected 100. percent to determine conformance with
22、 applicable requirements. Units of product selected for inspection shall represent .only the inspection lot from which drawn and shall not be construed to rep-. resent any prior or subsequent quantities presented for inspection. Homogeneity shall be considered to exist provided the inspection lot ha
23、s been produced by one manufacturer, ,in one Unchanged process, using the same materials and methods, in accordance with the same drawings, same drawing revisions, same specifications and same specification revisions, and complies with the .provisions for sub- mission of product as specified in MIL-
24、STD-105. All material sub- mitted for inspection in accordance with this specification shall comply with the homogeneity criteria specified herein, .regardless of the type of inspection procedure which 3s .being applied to. de-. termine conformance with requirements . Lot numbering, .as required, sh
25、all be in accordance with MIL-STD-1168. . 4.3.2 Examination.-nspection for Critical deflects (-ha Major defects, when so specified,) shall be 100 percent Smpllng plans and procedures for Major and Minor defects shall be in accordance with MIL-STD-i05 except that continuous sampling plans in accord-
26、ance with MIL-STD-1235 may be used if approved by the procuring activity. Sampling plans shall he applied to individual character-. istcs listed using an AQL of 0.65 percent for each M2nor defect . and an AQL of 0.40 percent for each Najor defect,except where 100 percent inspection is specified. Equ
27、ipment necessary. .for the perforrnance of the inspections listed shall be in accordance with I I I 4.3.4. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-P-LIhLI21B 13 9 7777706 0311737 1 . MIL-P-46421B (PA) 4.3.2.1 Cup, battery bee dwg. 8838
28、012). Cate gories Defects Pkthod of Inspect ion Critical: None defined. Major: 101. Outside diameter, min.;.Gage 102. Thickness through bottom, maximum (max);.bGage 103. Lengthb*,age . Minor : 201. Diameter of hole. . i . i ;Gage 202. Thickness through bottom, min. .Gage 203. inside diamee.i.Gage 20
29、4. Outside diameter, max,;.qage : 205. Flat missing from surface at 2.06. Evidence of poor workmanship open end*Visual (see 3.5). .Visua 4.3.2.2 Plug, firing (.see dwg. 88380151, Cat e gories Defects . Method of Critical: None defined. Inspect ion Major: 101. Large diameter, min. .Gage 102. 103. Len
30、gth of pilot, min;.;Qage 104. Total lengthe Length and profile of point. .Gage Minor: . 201. Large diameter, max. . i; . Li k . .Gage 202. Length of p-ilot, max;.;Gge 204. Finish improper,;Visual 205. Evidence of poor workmanship (see 3.5) . .,Visual 203. Diameter of pilot i . . . i Gage . . 5 - _-
31、-._I- . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-Ll621B 13 H 7797706 0311740 8 H 4.3.2.3 Body Csee dwg. 8838017 covering a detail of dwg. . 8838016) . Critical: None defined. Cat e go ri es Defects Method of Criti cai : inspection 1. F
32、lash hole missing.C3age Crack or split.;.;Visual Major: 101. Outside diameter.;.age .= . . .-. 102. Wall thickness, minGage 103. Location of first two pairS.of . holes,o-age 104, Diameter of holes . .Gage 105. Required plug gage -fails .to -pass thrQUgh body,.;.;i;.ge . . Minor: 201. Wall thickness,
33、 max,.;.;Gage : 203. 204. Evidence of poor worknhnship . 202. Total length .Gage Finish improper, . i i i:.;.:. .Visual (see 3.5sual . 4.3.24 Head Csee dwg. 8838018 covering a detail o$ dwg, 8838016) . Cat e go ries Defects Nethod of inspect ion MaJ or : Minor: 201 , 202. 203. 204. 205. None defined
34、. Total length .;.Gage Depth of body cavity .($age . - Chamfer at. opening of? body cavity missing or anadequate:. . ;“YLsual -. . Radius at bottom of body -cay;iul - Evidence of -paar! woakmanship -. (.see. 3 :52. . i. i i. . ; i i. ;. . . . i ;Vtsua . Provided by IHSNot for ResaleNo reproduction o
35、r networking permitted without license from IHS-,-,-L - - _=- x_l - . MIL-P-4642LB 13 W 7797906 0311741 T I MIkP-4642lB (PA) 4.3.2.5 Metal parts assembly (see dwg 8838016). Categories Defects Method of Inspect ion. Critical: 1. Head assembled to wrong end c of primer body. . .Vfsual Major: 101. Tota
36、l length, maxage 104. Diameter under flange I 102. Diameter of body, max.;Qage 103, Concentricity between dianeter under flange and flange. ;.Gage 105. Diameter of battery cup cavity. . .Gage 106, Depth to bottom of percussion - element cavity,.;.;. . =.ge 107. Diameter of percussion element, cavity
37、.;ooage 108. 109. Crack or splt;Yisual 110. Flash hole in head missing or obstructed.Visual 111. Braze incomplete.;.Visual 112. Protective finish of body missing or damaged to the extent of. - . exposing base metal. . i. . : . .Visual Gage . . Thickness of flange, pax. . oCTage . Minor : 201. 202. 2
38、03. 204. 205. 206. 207. 208. 209 . 210. 211 Diameter of flange.;.; . Gage Concentricity between percussion - element cavity and flash hole .63ge Diameter of chamfer at mouth of - Diameter of flash hole,.-Qage Diameter of chamfer at mouth of - Thickness of flange, min*.i.icfage CD Radii missing.*isua
39、l ChamferCs 1 missing ox -i.nadequate.Yj,sual Finish improper. . .V$.sual Evidence of poor workmanship Depth of battery cup cavity. .Gage percussion element cavity . .Gage flash hole age .- . . (see 3.5) Y . suai Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
40、om IHS-,-,-4.3.26 Diaphragm (see dwg. 7548518). Cat e go ries Defects Critical: None defined. Method of Inspect ion Major: None defined. Minor : AQL 1.50 percent 201. Large outside diameter i. .Gage 202. Small outside diameter;age 203. Total length.age . 4.3.3 Testing 4.3.3.1 Hydrostatic test Csee 3
41、.32. - Critical defect,- This test shall be conducted 10.0. percent. The test shall be performed as specified tn 44.i using equipment in accordance with.4.3.4. If any primer tubing fails to comply wfth the applicable requirement, it shall be classed defectlve and no primer bodies shall be fabricated
42、 therefrom. . 4.3.3.2 Strength of brazed loint (:see 3.42 - Critical defect.-A sample of 50 assemblies shall be selected from each lot for this test. If one or more assemblies fail to comply with the applicable requirement, the lot shall he rejected. The test shall be performed as. specified in k4.2
43、- using equipment as specified in 4.3.4. 4.3.4 Inspection equipment.-The inspection equipment rer quired to perform the examinations and test preScribed Ln this section Is identified under the “Method of Inspectiontt heading in 4.3.2 and 4.3.3 (see 6.21. 4.4 Test methods and procedures. . 4.4.1 Hydr
44、ostatic test.-Prior to machining, ,the tubing for primer fabrication shall be assembled into. the test equipment . specified in 4.3.4 and shall be tested for not less than five seconds at not less than the hydrostatic pressure calculated from the following forinula: 8 Provided by IHSNot for ResaleNo
45、 reproduction or networking permitted without license from IHS-,-,-MIL-P-4642LB 23 7777706 03LL7Y3 3 MIL-Pm46421B (-PA) P = (2ST times .9) divided by D where : P = .test pressure in pounds per square inch (psi) S = min. specified yield strength, psi T = specified min. wall thickness in inches D = sp
46、ecified max. outside diameter in inches Observation shall be made for rupture, or indication of flaws as evidenced by leaks, and for permanent deformation beyond drawing requirement s. Strength of brazed joint.-The metal parts assembly shall be tested in a universal testing machine by applying the s
47、pecified load in the axial direction. The rate of travel of the testing machine shall be 0.100 to 0.125 inch per minute. The assembly shall be observed for compliance with the applicable requirement, The sample assemblies subjected to this test shall not be returned to the lot. 4.4.2 5. PREPARATION
48、FOR DELIVERY. 5.1 Preservation and packaging. 5.1.1 Level Ci-Preservation and packaging of parts for primer, percussion, M57, shall be in accordance with Military Standard MIL-STD-1169. 5.2 Marking. -Marking shall be in accordance with Military Standard MIL-STD-1169. 6. NOTES 6.1 Ordering data. -Procurement documents shall specify the following : a. b. C. Title, number and date of this specification. Data card shall be prepared far each lot in accord- ance with the information specified in Standard ,. MIL-STD- 11 6 7 First article inspect ion provision . 9 Provided by IH
