1、MIL-P-60295C 05 December., 1-983 SUPERSEDING 4 December 1980 MIL-P-60295B MILITARY SPEC I FI CAT ION PROJECTILE, 2OMM, HEI, M56A4; METAL PARTS This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE * 1.1 Scope. This specification covers the proj
2、ectile metal parts for Projectile, 20MM, High Explosive Incendiary, M56A4, manufactured by the Blank, Cup and Draw Process. 2. APPLICABLE DOCUMENTS 2.1 Government documents. -.- 2.1.1 Specifications and standards. Unless otherwise specified , the following specrf ications and standards of the issue
3、listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) spcif ied in the solicitation form a part of this specification to the extent specified herein. I_- SPECIFICATIONS FEDERAL TT-C-490 MIL I TARY MIL-A-4 8 O 7 8 - Cleaning Methods and P r et r e a tment of
4、 Fer rou s Surf aces or Organic Coatings - Ammuni tion , Standard Quality Assurance Provisions, General Specifications for 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
5、Arm Armament Research and Development Center, Attn. DRSMC-QA, Dover, New J%rsey 07801 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. I I Licensed by Information Handling ServicesMIL-P-60295C 13 M 9999906 03
6、3740Y LI w MIL -P -6 O 2 9 5C STANDARDS MILITARY MIL-STD- 105 - Sampling Procedures and Tables for Inspection by At t r i but es MIL- STD- 6 5 1 - Visual I nspec ti on Standards for 20MM Ammun i ti on and C om pon e n t s MIL-STD-1168 - Lot Numbering of Ammuni tion MIL-STD- 1169 - Packaging, Packing
7、 and Mar king for Shipment of Inert Ammunition Components 2.1.2 Other Government documents, drawings and publications. The following other Government documents, drawings and publications form a part of this specification to the extent specified herein. DRAWINGS (See 6.8) U.S. Army Armament Research
8、& Development Center (ARDC) Product and Packaging Drawings 7258816 - 7259136 - 7259231 - LI 7259231 - 7259232 7259233 7258861 7259087 Blank, Rotating Band Shipping Container far Inert Projectile, 20MM Assemblies and Metal Parts Assemblies (10,000) Projectile, 20MM, HEI, M56A4, Metal Parts Index of I
9、nspection Equipment Lists for: Projectile, 20MM, HEI, M56A4, Metal Parts Body and Rotating Band Assembly, Proj ect i le, 20MM, HEI, M56A4 Body, Projectile, 20MM, HEI, M56A4 Carton, for Interplant Shipment of Projectiles, 20MM, Assemblies and Metal Parts Assemblies (200) Cartridge, 20MM, for HEI Proj
10、ectile Metal Parts Test L e i - 2 Licensed by Information Handling Services- _I- - - MIL-P-60295C 13 M 9999906 0337Li05 b MIL -P- 60 29 5 6 Inspection Equipment Drawin- 7259353 7259419 7259433 7259434 7259467 7259489 7259492 7259497 7259536 7 259 5 45 7259678 7259718 7259740 8655592 8657201 9332527
11、11075081 11075092 11075094 11075203 11075239 11075247 11075248 11075 270 PUB LI CAT IQNS AMCR 715-505 - Go, Flat Plug Gage, Special Band Tightness Tester Gage Indicator Scale Comparator, Optical, Hand TY Pe Adapter, Thread Plug Acceptance Check Gage Go, Thread Plug Gage Not Go, Flat Plug Gage, Speci
12、al Operating Ins truc tions (Band Tester) Gage, Indicator Optical Gaging Chart Gage, Snap, Special Go, Ring Gage, Special Optical Gaging Chart Ultrasonic Standards Probe Set-up for M56A4 Projectile Body Gage, Indicator Gage, Ring, Plain, Go, Special Gage, Snap, Go, Special Eddy Current Flaw Detector
13、 Gage, Comparator Requirements for Optical Gaging Charts Block, Setting Optical Gaging Chart Ammunition Ballistics Acceptance Test Methods, Volume 8, Test Procedures for 20MM Cartridges. (Copies of specifications, standards, drawings, and publications required by contractors in connection with speci
14、fic procurement functions should be obtained frm the procuring activity or as directed by the contracting officer.) 3 Licensed by Information Handling ServicesNIL-P-bO275C 13 a 777770b 0337LIOb I MIL -P- 60 29 5 C 2.1.3 Other publications. The following documents form a part of this specification to
15、 the extent specified herein. Unless otherwise indicated, the issue in effect on the date of invitation for bids or request for proposal shall apply. American Society for Tesing and Materials (ASTM) ASTM B117 - Standard Method of Salt Spray (Fog) Testing (Application for copies should be addressed t
16、o the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) Technical society and technical association specifications and standards are generally available for reference from libraries. They are also distributed among technical groups and using federal ag enc i es.
17、2.1.4 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. REQUIREMENTS 3.1 General. a Material. Materials shall be in accordance with the applicable drawings and specifications
18、. b. Manufacturing process. All parts and assemblies shall be manufactured by a process approved by the contracting officer, and no deviation from that process shall be made without prior approval (6.5). 3.2 Components. All parts and assemblies shall comply with all requirements specified on Drawing
19、 (Dwg.) 7259231, all associated drawings, and with all requirements specified in applicable spec if ica tions. 3.3 First article sample. Unless otherwise directed by the 3.4 Laminar metallic structure. Each projectile body shall contracting officer, a first article sample shall be required. be free
20、of laminar metallic structures as detectable by ultrasonic testing methods approved by the contracting officer. 3.5 Bandinq. The rotating band blank and the rotating band seat shall be clean at the time of banding. Shot or sandblasting shall not be used to clean the rotating band seat after knurling
21、. The rotating band blank shall fill the band seat. I 4 Licensed by Information Handling ServicesMIL-P-60295C L3 7799906 0337407 T MIL -P- 60 29 5 C 3.6 Soundness. Metal discontinuity in the projectile body, as determined by eddy current inspection, shall be less than that represented by Production
22、Check Standard (PCS) No. 1. 3.7 Protective coating. 3.7.1 Phosphate coating. The pretreatment process used shall be in accordance with applicable requirements of Dwg. 7259231. The phosphate coating shall be in accordance with the requirements of TT-C-490 for appearance and minimum weight, as applica
23、ble to the type of phosphate coating used. Test specimens (panels) shall be in accordance with the requirements of TT-C-490. 3.7.2 Paint coatinq. The interior and exterior coatings of the projectile metal parts shall be in accordance with applicable requirements of Dwg. 7259231. The exterior paint a
24、dhesion shall be in accordance with applicable requirements of TT-C-490. 3.7.3 Corrosion resistance. The exterior painted surfaces of the projectile metal parts shall show no evidence of corrosion (red rust) after exposure to a 5 percent solution of atomized salt spray for 24 hours. charged, and ass
25、embled into cartridges in accordance with Dwg. 7259087, shall not separate or break up in the test for metal parts security . specified on the applicable drawings, referenced specifications and the following: be free of defects, such as dents, deep scratches, cuts, excessive surface roughness, metal
26、 flaws, burrs, sharp edges, and other forms of substandard workmanship. 3,8 Metal parts security. The projectile metal parts, inert 3.9 Workmanchip. The requirements for workmanship are as 3.9.1 Processinq defects. The projectile metal parts shall . 3.9.2 Cleanliness. The projectile metal parts shal
27、l be free of all foreign matter. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection and standard quality assurance provisions. Unless otherwise specified herein or in the contract, the provisions of MIL-A-48078 shall apply and are hereby made a part of this detail specification. 5 t L
28、icensed by Information Handling ServicesMIL-P-bO275C 13 H 777770b 0337408 L H MIL -P-60 29 5C 4.2 Classification of inspections. The following types of inspection shall be conducted on this item. a. First Article Inspection (4.3) b. Quality Conformance Inspection (4.4) 4.3 First article inspection.
29、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 the following items in sample quantities as indicated. a. Inspection and nonfiring tests: Part D
30、escription Drawing Standard test panels Rotating Bands 7258816 Projectile bodies 7259233 Projectile body assemblies (uncoated) 7259232 Projectile metal parts (coated prior to paint) 7259231 Projectile metal parts (painted) 7259231 Method Quantity Para 3 4.5.7 32 4.4.2.1 12 5 4.4.2.2 125 4.4.2.3 125
31、4.4.2.4 170 4.4.2.5 b. Firing test: Parts description Drawinqs Quantity Method Para Projectile, metal parts 7259231 4,000 4.5.10 c. The projectile metal parts, Dwg. 7259231, shall be identified in accordance with MIL-STD-1168. 4.3.2 Inspections to be performed. See MIL-A-48078 and Table I herein. 4.
32、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 - -. . ,. . Licensed by Information Handling ServicesMIL-P-bO295C 13 m 7999906 0337Li09
33、 3 m I- 8 t a“ rl ni cr cr . 8 ni nid em *e .* d . nie ni- nib mm mm mm ni m -* *8 8. .): .K .): rl d d I I I O o O mm mm mm (uni nini ni rid dd d ni m h 7 Licensed by Information Handling ServicesI MIL-P-bO29CC 13 H 999990b 0337430 T C 8 ti a rl Id u c 2 c E 4 * 4 H L i3 O CJ m m -3 mm . . nim e. N
34、InPP a) mmmm m .e*. e #*# c rlrlrl rl III I O00 O e Id -4 Li a, u -4 Li u u u a, -n a, p: I u u u 4 # ZI Id c X cusw i C, - I- C, E 3 QI O 4 ia E . 3 O -I E O L , Licensed by Information Handling ServicesMIL-P-60275C 13 W 777770b 0337q17 2 W m rl rl 8 t a Y a, u m 4-i ti 5 u a 55 a oc Llu c -4 u3 %I
35、 c, c a, c O pi u ci c O 5 a, -rl 4-i -4 u a, or 14 Lo III w m c c, pi O a, W v . u O Licensed by Information Handling Servicesh a a, ci c .rl m pi I) ci pi ri m ci v 2 c ai ri -4 ci u a, -ri pi E In cv * * e * - I) a m a, u 5 8 3.1 a, ci a 5 CF a, a 2 .rl ci c .FI m c a, ci a, ri a a c: m .I) pi .r
36、l c u 4 a, a, ci I) 8 w 31 ci .rl 3 m u a, fl w O c O 4 ci m c *i x a, O ci c a, 3 .rl 0 a, a ri rl m c I) c O -4 ci c a, ci c, a u a ri .FI ci a 2 c i td c I) - x, C v) S (d E M 3 4 . 16 Licensed by Information Handling ServicesMIL-P-60295C 13 W 979990b 0337417 b W MIL-P-60295C 4.4.3 Tests. The tes
37、ts listed in Table II shall be conducted on each lot in compliance with the methods of inspection prescribed in 4.5. The samples shall be selected in such a manner as to be representative of the entire lot. The sample size and acceptance criteria for each test shall be as specified. TABLE II . Sampl
38、e Req. Test - Size I tem Para Laminar metallic structure verification Band tightness Soundness verification Automatic inspection Phosphate coating effectiveness (Appearance & weight) Paint adhesion m Corrosion resistance Metal parts security - 4/ 5/ 315 Body, after 3.4 315 Projectile, metal 3.5 315
39、Projectile, metal 3.6 tapering operation (See 4.5.2) parts (See 4.5.3) parts, unpainted (See 4.5.6) PCS No. 1 (See 4.5.5) 3 Projectile, metal 3.7.1 parts (before painting/or standard panels) (See 4.5.7) 13 Projectile, metal 3.7.2 parts, TT-C-490 (See 4.5.8) 32 Projectile, metal 3.7.3 parts (See 4.5.
40、9) parts (See 405.10) 250 Projectile, metal 3.8 - i/ Failure of one or more units of the sample to comply with the applicable requirements for laminar metallic structure shall be cause for rejection of the lot. 2/ If two or more units of the sample have an average radial void between the seated band
41、 and the band seat, greater than 0.004 inch, the lot shall be rejected. If one unit of the sample has an average radial void, greater than 0.004 inch, a second sample consisting of the same number of units as specified for the first sample shall be tested. If in the accumulated samples, two or more
42、units have an average radial void greater than 0.004 inch, the lot shall be rejected. Rejection of one or more units of the sample by the flaw detector in the test for body metal soundness shall be cause for rejection of the lot. 17 Licensed by Information Handling ServicesMIL-P-60275C 13 W 777770b
43、0337q20 2 W MIL-P-60295C Failure of the flaw detector to reject PC6 No. 1 shall be cause for rejection of all projectile metal parts inspected for “soundness“ since the preceding test and shall require requalification of the equipment for automatic inspection. (See 4.5.5) Failure of the phosphate co
44、ating on the sample projectiles or standard panels to comply with the applicable requirements shall cause rejection of all production projectile metal parts phosphated since the preceeding test. (See 3.7.1) If two or more units of %he sample fail to cornply with the requirement for paint adhesion, t
45、he Lot shall be rejected. the requirement, a second sample consisting of the same number of units as specified for the first sample shall be tested. If in the accumulated samples, two or more units fail to comply with the equiernent for paint adhesion, the lot shall. be rejected. If two or more unit
46、s of the sample fail to comply with the corrosion resistance requirement, the lot shall be rejected. requirement, a second sample consisting of the same number of units as specified for the %Ks% sample shall be tested. If in the accumulated samples, two or more units fail to comply with the corrosio
47、n resistance requirement, the lot shall be rejected. If one unit of the sample fails to comply with If one unit fails to comply with the The lot will be rejected, if any one of the following types of metal parts separation or breakup occurs in the metal parts security test, as witnessed by hole(s) i
48、n the fragmentation screen(s), or recovery of the part(s) or fragment (s) . a. Body breakup. b. Complete rotating band separation. This is defined as detachment of all of the band having band seat knurling imprint. defined as detachment of part of the band having band seat knurling imprint. thrown b
49、and fragments having no evidence of band seat knurling imprint, c. Partial rotating band separation. This is d. The following acceptance criteria shall apply to 18 Licensed by Information Handling ServicesMIL-P-bO275C 13 7777906 0337421 4 W MIL-P-60295C (i) The lot will be accepted if two or less projectile metal parts throw band fragments having length not greater than 0.500 inch. projectile metal parts throw band fragments having length not greater than O. 500 inch. (2) The lot will be rejected if three or more (3) The lot will be rejected if any projectile metal
