1、AMSC N/A -. -bi IINCH-POUND 1 MIL-C-14892 (AR) AMENDMENT 4 28 March 1991 SUPERSEDING AMENDMENT 3 30 November 1983 MILITARY SPECIFICATION CASE, CARTRIDGE, 105MM, M15OB1 This amendment forms a part of Military Specification MIL-C-14892 (AR), dated I November 1973, and is approved for use by the U.S. A
2、rmy Armament, Munitions and Chemical Command and is available for use by all Departments and Agencies of the Department of Defense. PAGE 1 2.1: Delete: 1fIEL-10521648 - Inspection Equipment List for Case, Cartridge, 105MM, M150Bltf. Add: 11F distribution is unlimited. Provided by IHSNot for ResaleNo
3、 reproduction or networking permitted without license from IHS-,-,-,NIL-C-14892 (Y) 13 m 9999906 0477109 O m i 4.2.1:. Delete MIL-C-14892 (AR) AMENDMENT 4 PAGE 4 in its entirety and substitute: 4.2.1 “In tia1 production sample. At the beginning of regular production, a sample shall be submitted in a
4、ccordance with contract requirements and shall consist of 274 cartridge cases as follows: 254 cartridge cases - coated 20 cartridge cases - uncoated 250 of the above coated cartridge cases shall be forwarded to a designated proving ground for ballistic testing. The sample shall be manufactured using
5、 the same materials, equipment, processes and procedures as used in regular production. All parts and materials, including packaging and packing, shall be the same as used in regular production and shall be obtained from the same source of supply. A first article sample or portion thereof as directe
6、d by the procuring agency shall also be submitted whenever there is a lapse in production for a period in excess of 90 days or whenever a change occurs in manufacturing processes, material used, drawing specifications or source of supply, such as to significantly affect product uniformity as determi
7、ned by the responsible technical agency .Ir PAGE 5 4.3.2.2: Delete Major defect 1i113t1. PAGE 6 * 4.3.2.3: Under “Critical“: Delete line 1 in its entirety and substitute “None defined“ . Characteristic 107: Delete It. . .inadequate or damaged“ and substitute I). . .defective“. i a a 2 Provided by IH
8、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i O I. PAGE 7 Add 4.3.3.a: Il4.3.3.a Metal defects. Prior to coating and after coating, each cartridge case shall be visually examined for metal defects. Failure of any cartridge case to comply with the requirements
9、of 3.9.1 or established visual standards shall be cause for rejection of the cartridge caseOtt PAGE 8 * 4.3.4.4.1: Second sentence, delete II. ,.rejection of the lot represented by the failing specimen.“ and substitute It. . .testing additional samples in accordance with MIL-STD-105, Inspection Leve
10、l II, 0.40% AQL.“ PAGE IO 4.3.7: Delete in its entirety. 4.4.2.1: Delete in its entirety and substitute: i14.4.2.1 Hardness. This test shall be performed on the locations specified by the applicable drawing in accordance with the procedures prescribed for Rockwell Hardness Testing by ASTM Method E-1
11、8.I1 4.4.6 Delete in its entirety and substitute: 114.4.6 Macro examination. The cartridge case shall be cut in a 90 degree section along the axis through the primer hole. The specimen shall be etched in accordance with the procedures prescribed for this test by ASTM Method A-317.11 The margins of t
12、his Amendment are marked with an asterisk or vertical lines to indicate wher changes (additions, modifications, corrections, deletions) from the previous amendment were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notation
13、s. 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. Cu s t o d i an : / - -,-= _- , ,/* , , / - Preparing activity: Army - AR ._ rzzz ./ Army - AR Project 1315-AC96 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
