MIL-B-27497C (NOTICE-1), MILITARY SPECIFICATION: BEARING, JEWEL, SAPPHIRE OR RUBY, SYNTHETIC (27-OCT-1999)

MIL-B-27497C (NOTICE-1), MILITARY SPECIFICATION: BEARING, JEWEL, SAPPHIRE OR RUBY, SYNTHETIC (27-OCT-1999)., MIL-B-27497C, dated 27 April 1978, is inactive for new design and is no longer used, except for replacement purposes.