MS21293B, MILITARY STANDARD: BOLT, MACHINE-STEEL, DRILLED DOUBLE HEXAGON, EXTENDED WASHER, .500-20 (MIL-S-8879 THREAD) (ASG) (17 SEP 1963) [NO SUPERSEDING DOCUMENT]

MS21293B, MILITARY STANDARD: BOLT, MACHINE-STEEL, DRILLED DOUBLE HEXAGON, EXTENDED WASHER, .500-20 (MIL-S-8879 THREAD) (ASG) (17 SEP 1963) [NO SUPERSEDING DOCUMENT].