MS18212C, MILITARY STANDARD: SCREW, MACHINE, PAN HEAD, SLOTTED, PLASTIC (NYLON), UNC-2A (02 APR 1975) [SUPERSEDED BY A-A-55624]
MS18212C, MILITARY STANDARD: SCREW, MACHINE, PAN HEAD, SLOTTED, PLASTIC (NYLON), UNC-2A (02 APR 1975) [SUPERSEDED BY A-A-55624].