MIL-B-16541B (AMENDMENT 3), MILITARY SPECIFICATION: BRONZE, VALVE; CASTINGS (10 JUN 1968) [NO S/S DOCUMENT]

MIL-B-16541B (AMENDMENT 3), MILITARY SPECIFICATION: BRONZE, VALVE; CASTINGS (10 JUN 1968) [NO S/S DOCUMENT]., This amendment forms a part of Military Specification MIL-B-16541B(WP) dated 3 December 1964, and has been approved by the Naval Ordnance Systems Command, Department of the Navy.