1、MIL-C-782B(AR) AMENDMENT 1 i July 1991 MILITARY SPECIFICATION CORES, STEEL; FOR USE IN BALL TYPES OF SMALL ARMS AMMUNITION This Amendment forms a part of Military Specification MIL- C-782B(MU), dated 20 March 1969, and is approved for use by the U.S. Army Armament, Munitions and Chemical Command, an
2、d is available for use by all.Departments and Agencies of the Department of Defense. PAGE 1 1.2, Add: “Type III - Core for Cartridge, 5.56mm, Bail, M855“ 2.1, Delete the first sentence and substitute the following: “2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The follow
3、ing specifications, standards, and handbooks form a part of this document to the extent specified herein. .Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited
4、 in the solicitation.“ 2.1.1, Under SPECIFICATIONS , add: “FEDERAL FED-STD-751 Metals; Test Methods“ 2.1.1, Under STANDARDS, add: “MILITARY MIL-STD-6866 Inspection, Liquid Penetrantt1 2.1.1, Under DRAWINGS, Munition Command, add: nC9342870 Core, 5.56mm, Ball, M855“ o AHSC WA 1 of 3 FsC 1305 DISTRIBU
5、TION STATEMENT A. Approved .for public relswe; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-782B (1) 13 7999906 0486734 7 M MIL-C-782B(AR) AMENDMENT 1 Add new paragraph 3.2.3 as follows: “3i2.3 Hardness. The finish
6、ed core shall have a Rockwell C“ scale hardness number within the limits specified on the core drawing. Applicable to the 5.56mm, Ball, M855 core only.“ PAGE 3 4.3.2.1, In Table I, make the following changes: Major 104: Major 105: Change.“Gage“ to “Gage $/I1 Major 106: Change Gage“ to “Gage ,/I1 Maj
7、or 109 : Change “Multilated“ to “Mutilated“ Major 110: Change “Gage ?/I1 ,to “Gage ?/I1 . Major 108: Change “Teat“ to “Teatsy Change “Visual - 3/11 to “Visual - 5/“ Add the following major defect: “112. Hardness Gage - 2/11 PAGE 4 4.3.2.1, Table I, Under Minor 203: After break add: “OX radius“ Add t
8、he following minor defect: , “208. Workmanship Vi sua1 Make the following changes under notes: Note 2/, Change “Caliber .SO“ to “5.56mm“ Note 3/, Delete in its entirety and“substitute: 113/ - Applicable to Caliber .50 cores only“ Add the following notes to Table I as follows: “4/ - This defect does
9、not apply to 5.56mm cores. 5/ Defined as crack deeper than .O10 for caliber .50 and .O08 for,5*56mm and 7,62mm cowes.? Cores having cracks with depth equal to or less than that noeed shall beclassedas minor defectives. Inspection shall be in accordance withMIL-STbL6866.l Section, polish and examine
10、under magnification. -. -. *e . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-782B(AR) AMENDMENT 1 0 Add new paragraphs 4.4. and 4.4.1 as follows: “4.4 Test Method and Procedure“ 4.4.1 Hardness. Each core of the test sample shall be tested in
11、 an area which is solidly supported in order to obtain valid readings. three readings taken on each core 120 degrees apart. The cores subjected to the hardness shall be scrapped.“ The hardness shall be determined by averaging 5.2.1 Delete the second sentence and substitute: “NO more than 50,000 5.56
12、mm, 10,000 7.62mm or 2,500 caliber .50 cores shall be packed in any single container.“ PAGE 5 6.1.4, Change: iiCupsll to “Cores“ 6.2.1, Delete in its entirety and substitute: “6.2.1 Visual defects. Defects for 5.56mm M855 and 7.62mm M59 cores covered by this specification are not shown specifically
13、in ORD-SIP-S302, Visual Inspection Standards for Cores Used in Small Arms Ammunition manufacture. The illustrations at the bottom of Page 7 of that SIP are applicable only to a predecessor design of the 7.62mm M59 core. Applicable visual defect standards of the Caliber .30 AP and API core sections of the SIP should be used in connection with visual inspection of the 5.56mm M855 and 7.62mm M59 cores where applicable. I Custodian: Army-AR Preparing activity: Army-AR (Project 1305-AD44) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
