MS21287B, MILITARY STANDARD: SCREW, MACHINE - STEEL, DRILLED DOUBLE HEXAGON, EXTENDED WASHER, .164-36 (MIL-S-8879 THREAD) (17 SEP 1963) [SUPERSEDED BY NASM21287]

MS21287B, MILITARY STANDARD: SCREW, MACHINE - STEEL, DRILLED DOUBLE HEXAGON, EXTENDED WASHER, .164-36 (MIL-S-8879 THREAD) (17 SEP 1963) [SUPERSEDED BY NASM21287].