MS90728G (NOTICE 1), MILITARY STANDARD: SCREW, CAP, HEXAGON HEAD (FINISH HEXAGON BOLT), ALLOY STEEL, GRADE 8, ZINC COATED PLAIN AND SELF-LOCKING, UNC-2A (02 APR 1991) [SUPERSEDED BY ANSI-B18.2.1].
MS90728G (NOTICE 1), MILITARY STANDARD: SCREW, CAP, HEXAGON HEAD (FINISH HEXAGON BOLT), ALLOY STEEL, GRADE 8, ZINC COATED PLAIN AND SELF-LOCKING, UNC-2A (02 APR 1991) [SUPERSEDED BY ANSI-B18.2.1].