1、 MIL-C-b34!4!2A 13 m 7797706 03505b3 1 m 7 MIL-C-634 4 2A (AR) -L 24 Oc to ber - 1 983 SUPERSEDING MIL-C-63442 (AR) 8 September 1981 MILITARY SPEC1 FI CAT I ON CARTRIDGE, 20MM, HIGH EXPLOSIVE, INCENDIARY, TRACER, M242A1 LOADING; ASSEMBLING AND PACKING This specification is approved for use by the US
2、 Army Armament Munitions and Chemical Command, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification covers requirements, quality assurance provisions, preparation for delivery for one type of cartridge designated as Cartridge, 20MM, H
3、igh Explosive Incendiary Tracer, M242A1 for use in Guns, 20MM, Automatic. 2 . APPLICABLE DOCUMENTS 2.1 spec if i listed .1 Specifications and standards. Unless otherwise ed, the following specifications and standards of the issue in that issue of the Department o Defense Index of - -u- Specification
4、s and Standards (DoDISS) specified in the solicitation form a part oe this specification to the extent specified he rein. SPECIFICATIONS MILITARY MIL-A-48 07 8 - Ammunition, Standard Quality Assurance Provisions, General Specifications For 1 FSC 1305 Beneficial comments (recommendations, additions,
5、deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, US Arm Armament Research and Development Center, Attn. DRSMC-QA, Dover, New Arsey 07801 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appeari
6、ng at the end of this document or by letter. - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-63442A 13 W 77979Ob 0350564 3 I MIL-C- 6 344 2A (AR) STANDARD MILITARY MIL -ST D- 10 5 - Sampling Procedures and MIL-STD-644 - Visual Inspection Stan
7、dards Tables for Inspection by At t r i bu tes and Inspection Procedures for Inspection of Packaging, Packing and Marking for Small Arms Ammunition for 20MM Ammunition and Components MIL-STD-651 - Visual Inspection Standards 2.1.2 _-_-_-,_,_,1_-_- Other Government documents drawings _,_-, and Eublic
8、ations. _,-_- The following other Government documents, drawings and publications form a part of this specification to the extent specified herein. DRAWINGS (See 6.5) U .S. Army Armament Research si Development Command (ARRADCOM) Product Drawings 7258801 9341738 i 9341739 9341740 LI93417 40 1054 242
9、8 LO542429 Classification of Defects for Case, Cartridge, 20MM, M103, M103Al and M103B1 Charged Body, Projectile, 20MM, High Explosive Incendiary Tracer for the M242A1 Cartridge Projectile, 20MM, High Explosive Incediary Tracer for the M242A1 Cartridge Cartridge, 20MM, High E xplos i ve I ncend i ar
10、 y Tracer, M242A1 Index of Inspection Equipment Lists for: Cartridge, 20MM, High E xplos i ve I ncend i ar y Tracer, M242A1 Disc, Metering Seal 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C- 6 344 2A (AR) Inspection - Equipment -I- Drawings
11、 - 7259424 7259443 7296962 7555162 7556901 8655181 8655592 11075013 11075060 11075126 11075284 Gage, Torque Testing Rack, Cartridge Indicator Gage Gage, Chamber Indicator , Comparator Gage Alignment Check Taper Plug Gage Ring Gage, GO, Special Gage, Feeler Gage, Indicator Test Fixture (Projectile Ex
12、traction) Primer Res is tant Test Circuit PUBLICATIONS U.S. ARMY MATERIEL COMMAND AMCR 715-505 - Ammunition Ballistics Acceptance Test Methods, Volume 8, Test Procedures for 20MM Cartridges (Copies of specifications, standards, handbooks, drawings and publications required by manufacturers in connec
13、tion with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 I- Other publications. - The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the. issue in effec
14、t on the date of invitation for bids or request for proposal shall apply. CODE OF FEDERAL REGULATIONS TITLE 49 - T ranspor tat i on, Parts 100-199 (The Code of Federal Regulations is available from the Superintendent of Documents, US Government Printing Office, Washington, DC 20402. Orders should sp
15、ecify ?49 CFR 100-199 (latest revision) It .) 2.3 -II_- Order of precedence. - In the event of a conflict between the text of this specification and the reference cited herein, the text of this specification shall take precedence. , 3 Provided by IHSNot for ResaleNo reproduction or networking permit
16、ted without license from IHS-,-,-MIL-C-63442A 13 W 7777706 0350566 7 MIL-C- 63 4 4 2A (AR) 3. REQUIREPIENTS 3.1 General. - a -I Material. Materials shall be in accordance with the applicable drawings and specifications. b* -_-_- Manuf ac tur ing-process. All parts and assemblies shall be manufacture
17、d by a process approved by the contracting officer, and no deviation from that process shall be made without prior approval (6.13). 3.2 -u- Cartridge. The cartridge shall comply with all requirements specified on Drawing (Dwg.) 9341740, all associated drawings, and with al1 requirements specified in
18、 applicable spec if ica ti ons . the projectile from the cartridge case shall be 1100 and 2800 pounds, inclusive. minimum torque of 10 inch pounds without movement. 3.3 . Contamination of energetic - components. - Extreme care shall be exercised to avoid contamination of primers and propellant by oi
19、l, grease or other foreign matter since such contamination can cause misfires or increase action time and lot rejection. a. - Pro&?ctile -I- Pull Test. The force necessary to extract b- -_- Projectile -_-_- Torgue. The projectile shall withstand a 3.4 -_-I- Electrical resistance of Erimed - case. Th
20、e electrical resistance of the primed case shall not be less than 500 ohms or more than 1,200,000 ohms. following : 3.5 -_- Functioning. The cartridge shall comply with the 3.5.1 Conditioned at 680F to 72%. a. Velocity. - Average velocity of the projectile shall be 3380 50 feet per second (fps) at 7
21、8 feet from the muzzle of the gun and the standard deviation shall not exceed 40 fps. 6.6). times the average range (R) (see 6.7) of the chamber pressure shall not exceed 60,500 pounds per square inch (psi). projectiles shall not vary from the average velocity (dry) of projectiles by more than 100 f
22、ps. (See b* _-_ Pressure. Ayerage chamber pressure (%) plus 0.84 c. _-_- Waterproofness. _-_-_ The average velocity (wet) of 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- -. MIL-C-63q42A 13 M 7797706 0350567 7 - MIL-C-6 344 2A (AR) 3.5.2 Conditi
23、oned at -65%. The action time of the sample - - cartridges and the average action time (x) plus four sample standard deviation(s) shall not exceed 4 milliseconds (see 6.6). 3.5.3 Conditioned at ambient temeerature. -_-1_- - a* -u- Function and casualty. -r- Cartridges shall function b* - Projectile
24、- plate function. Projectile shall function without casualty when fired in the automatic weapons. with high order detonation upon target impact. (Chapter 1, Section 6, AMCR 715-505, Vol. 8 and See 6.8 and 6.10.) c. - ProLCtile I-u- trace. The projectile shall exhibit a trace visible against a dark b
25、ackground for a minimum of 1.9 seconds. d- - Accuracy. Average mean radius of all targets shall not exceed 15 inches (accuracy) at a range of 600 yards. 3.5.4 - SafeQ, There shall be no premature burst (see 6.11), or evidence thereof, nor any projectile sticking in the gun bore in any of the test fi
26、rings. technical provisions for first article inspection. Requirements for the submission of first article samples by the contractor shall be as specified in the contract. 3.6 - First article i-ection. - This specification contains 3.7 Workmanship. -I- The requirements for workmanship are as specifi
27、ed by applicable drawings, referenced specifications and the following: 3.7.1 Processing - defects. The metal parts and assemblies shall be free of cracks, splits, ruptures, perforations, dents, deformities, exposed explosive and other forms of substandard workmanship. 3.7.2 -_- Cleanliness. All com
28、ponents and assemblies shall be free of foreign matter, such as oil, grease, corrosion, dirt, chips, etc. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility -u for inspection -y- and standard quality - assurance provisions. I_- Unless otherwise specified herein-r in the contract, the provisions of M
29、IL-A-48078 shall apply and are hereby made a part of this detail specification. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-63442A (AR) 4.2 Classification of inspections. - The following types of inspection shall be conducted on this item
30、. a. First Article Inspection (4.3) b. Quality Conformance Inspection (4.4) 4.3 First article insEection. 4.3.1 - Submission. The contractor shall submit a first - -I- article as designated by the Contracting Off icer for evaluation in accordance with the provisions of 4.3.2. The first article sampl
31、e shall consist of the following items in sample quantities as indicated. S ea1 Metering Disc Charged Body, Projectile Projectile Assembly Car tri dge Pack ag i ng 10542429 125 10 5 4 24 28 125 9341738 125 9341739 125 9341740 730 (See 5.1) 7 4.3.2 I herein. Inspections - to be performed. - See MIL-A
32、-48078 and Table 4.3.3 - Rejection. - See MIL-A-48078. Failure of the original first article sample to be in accordance with the applicable drawings and requirements of Table I, as specified herein will result in sample disapproval. 6 Provided by IHSNot for ResaleNo reproduction or networking permit
33、ted without license from IHS-,-,-MIL-C-b3442A 13 = 7777706 0350567 2 a pi Il H II (d cv N cv N CVN 4 M M M M rnM m . . . In In In In O0 N cv N ni mm rl rl rl rl Fe r- 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-b3442A 13 777770b 0350570 7
34、 W MIL-C-63442A (AR) 4.4.1 - Inspection - lot formation. Inspection lots shall comply with the lot formation provisions of MIL-A-48078. In addition, each inspection lot shail contain: manufacturer. a. Cartridge cases from one interfix lot number from one b. Projectile parts from one interfix lot num
35、ber from one manufacturer. c. Fuze assemblies from one interfix lot number from one manufacturer. d. Primers from one interfix lot number from one manu f act u r er . e. Propellant from one lot number from one manufacturer. f. Incendiary pellets from one interfix lot number from one manufacturer. g.
36、 High explosive from one interfix lot number from one manufacturer. 4.4.2 - Examination. See MIL-A-48078. a. Unless otherwise specified in the Classification of Defects and Test Tables, sampling plans for major and minor defects shall be in accordance with MIL-STD-105, Inspection Level II. b. To det
37、ermine product acceptability, major and minor defects as listed herein maybe considered collectively on a class basis or defects may be considered individually. When a class basis is utilized the Acceptable Quality Level (AQL) for major defects shall be 1.50 percent and the AQL for minor defects sha
38、ll be 2.50 percent. collectively on a class basis, the AQL for any individual defect shall be limited to .40 percent. In addition, where three or less defects appear in a classification sampling plans applicable to a class shall not be used for major defects. shall be tested by the contractor for el
39、ectrical resistance subsequent to primer crimping and waterproofing, using the method of 4.5.4.1. Primed cases which fail to meet the requirement of 3.4 shall be removed from the lot. However, when major defects are considered c. I-_- Primed cartridge - cases. Each primed cartridge case 8 Provided b
40、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-h 2 v 4 N cy cy m w I u I d c E e E H w Pi m Fri u 8 t ir rl m a, ul rl E a4 I, E4 - MIL-C-63442A 13 = 7777906 0350571 O Ca a, C .d W a, Ca a, a 8 8 cnc crio .rl u CO E-ru 8 3 Y O 8 w O a, o C 8 El 4 9 Provided b
41、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-o n W Y Y 8 rl 8 rl w i8 :a !(v . a, a, a 3 ri Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-63442A 13 9997906 0350573 4 = - 8 E E E& E P a L O w z Y IL W
42、 oc U rl (II -4 4 3 rl m 3 (II .d 3 N (ucv (ucv l- M MM MM MMMMM M . o w (u e . 4 u, C .d 8 rl rl O w (II a, c, E s rci a, a, v! il B L a, rl .d c, o a, -n O PI h m u 4 8 m a, m m c u u X -4 E w m E 9 8 3 Li O 3 c c, 3 O E * O a 8 5 o - Provided by IHSNot for ResaleNo reproduction or networking perm
43、itted without license from IHS-,-,-m m r- rl * m QI - k rl Q UJ UJ 4 al li .rl U u al -n pi $ Ei e cv * * e e e - rl In m e rl * Orl Inm b5 om m m rl c3 43 . 2 dp dpdp In OIn cv *W e *e a al c .rl w al a al 2 8 Q) N 5 w w O U III al +J al 5 w U h rl Q u) III m u) .I4 8 d n e rl O rl & .rl 81 El e. r
44、lcv O0 cvcv W (v e * e e . El 8 .I4 rl rl O w I) al U O c 4J O O w al al i“ i - 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-63442A 13 W 7797706 0350575 8 cv Lr O rl t W VI U i - cvcv cv cvcvcv cvcvcvcvcvcv cv mm m mmm mmmmmm m .e . ea.
45、.e . -. aal & rl .rl ai w u .rl rl rl O w rn al c, O C ci O O w 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-C-634Y2A 13 W 7977706 0350576 T W * O a t U - Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
46、e from IHS-,-,-MIL-C-63442A 13 = 7777906 0350577 I I rl Lr O rl t W v r m * * mau rlwww cv ma u ma um rlrlrlrl cvcv mmmmm .e. m e. .e mmmm mm mmmulm cv fim * e. .e e 0. mmmm mm mmmmm m mm m rlrl II O0 O O00 O O000 o O0 o cvcvcv m *utmm cv cvcv cv Ici1 . mi :I ui - W cv * * tn d 4 . . . 8 rl rl O (I-
47、I W a, ci O c ci O O w a, Q) cn y L - 15 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-63442A (AR) Footnotes - 1/ If the crimp closure is not pressed tightly against the metering disc for 360 or the metering disc can be moved manually, the charged body sub-assembly shall be classed defective. May be performed on cartridge. When the fuze turns with respect to the projectile b
