1、t .- i MIL-C-70441 13 9999906 0354324 3 M MIL-C-70441 (AR) 9 December 1983 MXLITARY SPEC IF ICAT ION CASE, BRASS, CAL .30, NATIONAL MATCH This specification is approved for use by the US Army Armament, Munitions and Chemical Command and is available for use by all Departments and Agencies of the Dep
2、artment of Defense. 1. SCOPE 1.1 Scope. This specification covers requirements, quality assurance provisions, packaging, the fabrication, manufacture of one type of cartridge case designated as Case, Brass, Cal .30, National Match. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specificatio
3、ns and standards. Unless otherwise specified, the following specificatlons and standards of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitations, form a part of this specification to the extent specified herein. SPE
4、CIFICATIONS MIL IT ARY MIL-A-48 O78 - Ammunition, Standard Quality Assurance Provisions, General Specification for STANDARDS MILITARY MIL -ST D- 1 O 5 - Sampling Procedures and Tables for Inspection by Attributes MIL-STD-636 - Visual Inspection Standards for Small Arms Ammunition Through Cal .50 MIL
5、-STD-1169 - Packaging I Packing and Marking for Shipment of Inert Ammunition Components FSC 1305 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, US Arm Armament Research and Developme
6、nt Center, Attn. DRSMC-QA, Dover, New zrsey 07801 by using the self-addressed Standardization Document Emprovement Proposal (DD Form 1426) appearing at the end of this document or by letter. c THIS DOCUMENT CONTAINS /! PAGES., 1. Provided by IHSNot for ResaleNo reproduction or networking permitted w
7、ithout license from IHS-,-,-MIL-C-70441 13 999990b 0354325 5 MIL -C- 7 O 4 4 1 ( AR) MIL-STD-1188 - Commercial Packaging of Supplies and Equ i pment 2.1.2 Other Government documents, drawings and publications. The following other Government documents form a part of this specification to the extent s
8、pecified herein: DRAWING US ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER (ARDC) PRODUCT AND PACKING DRAWINGS Classification of Cartridge Case Defects, Small Arms Ammuni tion Cartridge, Cal .30 Match, M72 Case, Brass - 7643674 8595432 8595433 - - INSPECT I ON E QUIPMENT DRAWINGS EL 8658201 EL 866361
9、5 7298354 7298478 7298485 7558058 8648308 8648315 8648611 8648717 Cham ber pres sur e Function and Casualty I ndi cat or Gage Indicator Gage Indi cat or Gage Gage, Indicating, Diameter of Extractor Groove Gage, Receiver, Profile and Alignment, Cal .30 Cartridge Gage, Fixture, Indicating, Cal .30 Car
10、tridge, Profile Failure Lifting Lever Assembly Instructions, Profile Failure Inspection P B LI CAT I ONS Ammunition Ballistic Acceptance Test Methods, Test Procedures for 7.62MM Cartridge SCATP-7.62 - 2.1.3 Order of precedence. _. In the event of a conflict between this specification and the referen
11、ces cited herein, the text of this specification shall take precedence. 3. REQUIREMENTS 3.1 - General. The cartridge case shall comply with the requirements of Drawing (Dwg .) 8595433, referenced specifications and other requirements specified herein. 2 Provided by IHSNot for ResaleNo reproduction o
12、r networking permitted without license from IHS-,-,-9 MIL-C-70q41 13 m 7777706 0354326 7 3.2 Function and casualty. The brass case shall be assembled in accordance with Dwg 8595432 and shall function without casualty when tested in the M1 rifle. 3.3 First article inspection. - This specification con
13、tains technical provisions for first article inspection. Requirements for the submission of first article samples by the contractor shall be as specified in the contract. (See 4.3) 3.4 Workmanship. The brass case shall be fabricated in a thorough and workmanlike manner. It shall be free of burrs, sh
14、arp edges ,-foreign matter, and defects not permitted by MIL-STD-636. - The cleaning method used shall not be injurious to the brass case, nor shall it be contaminated by the cleaning agents. All required marking and stamping shall be neat and sharply defined. 4. QUALITY ASSURANCE PROVISIONS 4.1 Rec
15、ponsibPlitv_forndard quality i. Unless otherwise specified herein or in the contract, the provisions of MIL-A-48078 shall apply are hereby made part of this detail specification. 4.2 Classification of inspection. The inspection requirements specified herein are classified as follows: a. First Articl
16、e Inspection (See 4.3) b. Quality conformance Inspection (See 4.4) 4.3 First article inspection. 4.3.1 Submission. The contractor shall submit a first article as designated by the Contracting Officer for evaluation in accordance with the provisions of 4.3.2. The first article sample shall consist of
17、 the following items in the sample quantities as indicated. Fart Des cr i pt ion - Drawing Quantity Cartridge, Cal .30 Match, M7 2 8555432 Case, Brass 8595433 40 O 125 4.3.2 Inspections to be performed. See MIL-A-48078 and Table I herein . 4.3.3 Rejection. See MIL-A-48078 and Table II. 3 Provided by
18、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-111 u) Id u m L a, 111 Id o IMIL-C-704VL 13 7979906 0354327 9 E! b rl*cv mmm * 31 u rl Id !3 o Id u a C Id E: O -4 ci u c 1 i% c E F Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
19、ense from IHS-,-,-MIL-C-70441 (AR) 4.4 Quality conformance inspection. 4.4.1 Inspection lot formation. Inspection lots shall comply Each inspection with the lot formation provisions of MIL-A-48078. lot shall contain brass cases from one interfix lot number from one manufacturer. Inspection lots shal
20、l not exceed 150,000 cartridges cases per lot. 4.4.2 Examination. See MIL-A-48078. Samplinq plans. Unless otherwise specified in the Classification of Defects and Tests Tables, sampling plans for major and minor defects shall be in accordance with MIL-STD-105, Inspection Level II. 5 Provided by IHSN
21、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I 3 MIL-C-70441 13 = 7777906 0354327 2 a #e. orlhlm*mwfiaCnor-lf3 000000000ddrl rlddrldrlrldrldrld I m t5 t ri a I m m a LI a b a, m m u dldl c O ci u 1 LI 4 ci O .rl Ea 4 8 n k4 a, b rlm oa, CLI ta ea 0. hlm 6 a Provi
22、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70441 13 77777Ob 0354330 7 8 w w pi m m t5 t N w Ul Ul w LI E9 a, Ul m U 4 m *a a a, 3 O O ELI osi cl ui8w $02 5Ul c O oasc 7 Provided by IHSNot for ResaleNo reproduction or networking permitted withou
23、t license from IHS-,-,- MIL-C-70441 13 W 7777706 0354331 O I m rr) * Lo QI Lo co (II (II Id & a L a, (II Id u O w cu pi cl rn 5 Id a, c 31 c, tri rl c .rl (II (II Id I *. 6 E= 3. Ef P 2 ri a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-P - - - MIL
24、-C-7044L 13 7779906 0354332 2 MIL-C-70441 (AR) P TABLE II. Acceptance Number i/ Defects 1st Sample Cumulative 1. 2. 3. 4. (Ist & 2nd Samples) Misfire 2/ (b) Other 1 2 (a) No vent hole or obstruction in Primer leak 5: . - the vent hole area O Perforation in firing pin indent Escape of gas through pri
25、mer cup Escape of gas around primer: eu$. Blown primer or primer falls out Primer remains in pocket but is casualties: Longitud ina 1 split : (i) Neck and shoulder (S&S) (2) Body (J) . (3) Body (K) . (4) To head (L) (5) Through head (M) . Cir cumferent ia1 rupture 4: (1) Partial, shoulder or body (J
26、 or S) . (2) Partial body (K) . (3) Partial head (L) . (4) Complete . in primer cup other than (a) above of pocket on retraction of bolt . physically loose 1 1 5 O 1 9 3 1 O O 2 O O O 2 2 9 1 2 17 5 2 1 1 4 1 1 1 . O 1 Failure to extract 1 if the number of defects found in the first sample exceeds t
27、he acceptance number for the first sample, but is equal to or less than the acceptance number for the cumulative sample, a second sample, consisting of double the quantity specified under the function and casualty test, shall be fired in the weapon If the total number of defects in the combined firs
28、t and second samples exceeds the acceptance number for the cumulative sample, the first article sample or lot shall be rejected. sample, defects other than those for which the second sample is being tested should occur to the extent that they exceed the acceptance number for the cumulative sample, t
29、he first article sample or lot shall be rejected. If, in testing a second 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70441 13 777770b 0354333 4 M MIL-C-70441 (AR) . 2 Each cartridge that misfires shall be disassembled and examined for th
30、e absence of the vent hole in the primer pocket or any obstruction in the vent hole area of the primer pocket that can be assignable as the cause for misfire. If the vent hole is missing or obstructed, the lot shall be rejected with no second sample permitted. 3 Gas escapes around more than 50 perce
31、nt of periphery of cup. 4 For location of defects indicated by letters in parentheses, see Dwg. 7643674. 5 If a lot fails due to primer leak an investigation will be made by the contractor to determine if the case or the primer was the cause of failure. Final determination of the cause of failure wi
32、ll be determined by the government. 4.4.3 Testing. Testing is described in Table 1 and paragraph 4.4.2.1. 4.4.4 Inspection equipment. The inspection equipment required to perform the examinations and tests prescribed herein is described in Table 1 and paragraph 4.4.2.1. The contractor shall submit f
33、or approval, inspection equipment designs in accordance with terms of the contract. See Section 6 of MIL-A-48078 and 6.3 herein. 4.5 Methods of inspection. 4.5.1 Function and casualty test. Prior to assembly of this sample, a quantity of 20 cartridges, assembled in accordance with Dwg. 8595432, shal
34、l be tested for chamber pressure in accordance with Section 7 of SCATP-7.62. The test shall be conducted at 70 f 2OF. If any individual chamber pressure reading is not between 47,500 pounds per square inch (psi) plus or minus 2500 psi, a new charge weight shall be established. When the individual pr
35、essure readings from a quantity of 20 cartridges meet the pressure requirement, the function and casualty sample shall be assembled in accordance with Dwg. 8595432 using the assessed charge weight. The charge weight and overall length of each of the assembled cartridges from both the assessment quan
36、tity and function and casualty sample shall be measured and the values recorded. The function and casualty test shall be performed in accordance with Section 10 of SCATP-7.62 using two M1 rifles. 5. PACKAGING 5.1 Preservation and packaging. Unless otherwise specified, packaging shall be Level B. (Le
37、vel A and B) shall be in accordance with MIL-STD-1169. protection shall be in accordance with MIL-STD-1188. accordance with MIL-STD-1169. Maximum and intermediate protection Minimum 5.2 Unitization. Unitization for Levels A and B shall be in 10 Provided by IHSNot for ResaleNo reproduction or network
38、ing permitted without license from IHS-,-,-MIL-C-70442 13 777970b 0354334 b I . MIL-C- 7 0441 (AR) * 5.3 Marking. Marking shall be in accordance with 5.4 Shipping. When shipments from more than one lot are shipped as a carload, each lot shall be kept separate and the division between lots clearly in
39、dicated to prevent mixing of the lots in transit. MIL-STD-1169. 6. NOTES 6.1 Intended use. The cartridge case covered by this specification is intended for National Match use. 6.2 Ordering data. a. See MIL-A-48078 b. Responsibility for furnishing test weapons, bullets, propellant and primer (See 3.2
40、). 6.3 Submission of inspection equipment designs for approval. See MIL-A-48078. Submit equipment designs as required to Commander, ARDC, ATTN: DRSMC-QAF-I(D) , Dover, NJ 07801. 6.4 Drawings. Drawings listed in Section 2 of this specification under the heading U.S. Army Armament Research and Develop
41、ment Center (ARDC) may also include drawings prepared by, and identified as U.S. Army Armament Research and Development Command (ARRADCON), Edgewood Arsenal, Frankford Arsenal, Rock Island Arsenal, Picatinny Arsenal drawings. Technical data originally prepared by these activities are now under the cognizance of ARDC. Custodian: Army-AR Preparing activity: Army-AR (Project 1305-A935) f3U.S. GOVERNMENT PRINTING OFFICE: 1984-7OS-O40/AO710 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
