1、MIL-C-4b577D (2) m 99999Ob 202bbb8 735 MIL-C-4 6 5 7 7D AMENDMENT 2 31 October 1996 SUPERSEDING AMENDMENT 1 20 May 1981 (AR) MILITARY SPECIFICATION CARTRIDGE, SOMM, ARMOR PIERCING INCENDIARY, M53 This amendment forms a part of Military Specification MIL-C-46577D (AR), dated 7 December 1973, and is a
2、pproved for use by all the Departments and Agencies of the Department of Defense. PAGE 2 * 2.1, Make the following changes: Under Drawings, add “10534010 - Waterproofness Testing Apparatus“. Under Publications, add “SCATP-7.62 - Ammunition Ballistic Acceptance Test Methods, Test Procedures for 7.62M
3、M Cartridges“. PAGE 3 * 3.9, Delete in its entirety and substitute the following: “3.9 Waterproofness. The cartridge shall not release more than one bubble of air from the mouth of the case when subjected to a pressure differential of 7.5 psi for 30 seconds. “ . PAGE 8 * 4.4.4, Table I, Waterproofne
4、ss, Under Sample Size Production Lot, delete “20“ and substitute 23“. AMSC N/A 1 of 3 FSC 1305 DISTRIBU!i!ION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-C-46577D (2) W 9999
5、906 2026667 671 r MIL-C-46577D (AR) AMENDMENT 2 4.4.4, Table I, Make the following changes: * Note 8/, Delete in its entirety and substitute the following: “8/ Waterproofness. Failure of two or more of the sample cartridges to comply with the specified waterproofness requirement shall cause rejectio
6、n of the lot. If one cartridge of the sample fails to comply, a second sample of 23 cartridges shall be tested. two or more of the combines samples fail to comply with the waterproofness requirement.“. The lot shall be rejected if Note 9/, Delete in its entirety and substitute the following: 91 Accu
7、racy. If the average mean radius of the sample cartridges exceeds the applicable requirement, a retest sample of 100 cartridges shall be tested for the accuracy parameter only. The lot shall be rejected if the average mean radius of the 10 accuracy targets exceeds the requirement. “ . Note 11/, Dele
8、te If one or two cartridges fail to comply , with therequirement, a second sample of 20 cartridges shall be tested.“ and substitute If one or two cartridges fail to comply with the requirement, a second sample of 20 cartridges shall be tested for the incendiary performance parameter only. “ . PAGE 1
9、1 * 4.4.4.1, Table II, Note 2/, Line 1, Delete. , excepting those from the waterproofness test (Table I) ,I. PAGE 12 * 4.4.4.1, Table II, Note 2/, Delete “Misfire(s) occurring in the waterproofness test shall be handled in accordance with AMCR 715-505, Volume 8. I. PAGE 14 * 4.5.5, Delete and Waterp
10、roofness“ from title. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-4b577D (2) m Ob 2026670 393 m 4 MIL-C-46577D (AR) AMENDMENT 2 4.5.6, Add The 200 yard range may be reduced by 11.5 yards to accommodate combining test phases. yard range requ
11、ires direct proportional adjustment of the average mean radius. I. Any variation from 200 * Add the following paragraph: “4.5.13 Waterproofness. The method of test shall be as The equipment required to conduct specified in SCATP-7.62. this test is specified on drawing 10534010. shall be evacuated to
12、 a pressure of 7.5 psi below atmosphere, and held at that pressure for 30 seconds.“. The container The margins of this amendment are marked with an asterisk or vertical lines to indicate where changes (additions, modifications, corrections, deletions) from the previous amendment were made. This was
13、done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. Custodian: Amy-AR Review activities: Air Force-70 Preparing activity: Amy-AR (Project 13 05-0159) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
