MS18211B, MILITARY STANDARD: SCREW, MACHINE, 82 DEG. AND 100 DEG., FLAT COUNTERSUNK HEAD, SLOTTED, PLASTIC (NYLON), UNC-2A AND UNF-2A (07 JAN 1994) [SUPERSEDED BY A-A-55623]

MS18211B, MILITARY STANDARD: SCREW, MACHINE, 82 DEG. AND 100 DEG., FLAT COUNTERSUNK HEAD, SLOTTED, PLASTIC (NYLON), UNC-2A AND UNF-2A (07 JAN 1994) [SUPERSEDED BY A-A-55623].