1、 INCH-POUND MIL-O-71152 (AR) AMENDMENT 223 April 2001 SUPERSEDING AMENDMET 110 March 1995 MILITARY SPECIFICATION OBTURATING RING, PLASTIC SPLIT (MOLDED) This Amendment forms a part of MIL-O-71152 (AR), dated 1 November 1993, and is approved for use by the U.S. Army Armament Research, Development and
2、 Engineering Center, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 2 * 2.1.2, Under DRAWINGS, delete drawing number and title and substitute: “12977453 Obturating Ring“ PAGE 3 * 3.2, Delete Drawing Number “12953573“ and substitute “12977453“ 3.3, Delete
3、in its entirety. 3.4, Delete all entries under “Characteristic and Requirements“ and substitute the following: “Izod impact strength (min) 58 Joules/meter (J/M) Tensile yield strength (min) 40 Megapascal (Mpa) Flexuran Modulus (min) 300 Megapascal (Mpa) Deflection temperature under a load at 1820 Kp
4、a 130 Degrees Centigrade“ 1 of 3 AMSC N/C FSC 1395 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-O-71152 (AR) AMENDMENT 2 PAGE 6 * TABLE I, Under Examination or T
5、est, delete: “Ring, Obturating (Dwg. 12953573)“ and substitute: “Obturating Ring (Dwg. 12977453)“ * Under Conformance Criteria for the proving ground test, delete: “70“ and substitute “a“ * Under Notes, add: “(a) 70 obturator assemblies shall be used for this test. There are two obturators required
6、to form an assembly.“ PAGE 9 * 4.4.2.1, Delete the Title in its entirety and substitute “Obturating Ring“ * Delete the drawing number and substitute “12977453“ * Major 101, delete callout under Examination or Test in its entirety and substitute: “Ring gage fails to pass freely over the outside diame
7、ter of the obturator ring assembly (there are two obturators required to form an assembly) while placed on a cylindrical plug.“ Major 103, Delete in its entirety. Major 104, Delete in its entirety. Notes, Delete: “all ogive rear sections,“ and substitute: “obturators“ PAGE 10 * 4.4.2.1, Delete the T
8、itle in its entirety and substitute: “Obturating Ring“ Delete the drawing number and substitute: “12977453“ PAGE 11 * 4.4.3.2, First line: Delete the word “obturators“ and substitute “two piece obturator assemblies“ 4.4.3.2, Table III, under Temp (F): Group 3, Delete: “145“ and substitute: “+110“ Gr
9、oup 4, Delete: “-50“ and substitute: “0“ Group 5, Delete: “145“ and substitute: “+110“ Group 6, Delete: “-50“ and substitute: “0“ 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-O-71152 (AR) AMENDMENT 2 PAGE 13 4.4.5.2: Line 2, Delete: “+145“ a
10、nd substitute: “+110“ Line 3, Delete: “-50“ and substitute: “0“ Line 4, Delete: “+145“ and substitute: “+110“ Line 5, Delete: “-50“ and substitute: “0“ PAGE 14 * 6.3, Third line, Delete: “SMCAR-QAT-I“ and substitute: “AMSTA-AR-QAA-C“ * 6.4, Fourth line, Delete: “SMCAR-QAT-B“ and substitute: “AMSTA-A
11、R-QAA-C“ The margins of this amendment are marked with an asterisk, or vertical line to indicate where changes (additions, modifications, corrections, deletions) from the previous amend were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccura
12、cies 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: Preparing activity: Army-AR Army-AR (Project 1395-0293) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
