MS18154D (NOTICE 1), MILITARY SPECIFICATION: SHEET, SCREW, CAP, HEXAGON HEAD (FINISHED HEXAGON BOLT), HEAD DRILLED FOR LOCKING WIRE, ALLOY STEEL GRADE 8, ZINC COATED, UNC-2A, PLAIN AND SELF-LOCKING (02 APR 1991) [S/S BY ANSI-B18.2.1]

MS18154D (NOTICE 1), MILITARY SPECIFICATION: SHEET, SCREW, CAP, HEXAGON HEAD (FINISHED HEXAGON BOLT), HEAD DRILLED FOR LOCKING WIRE, ALLOY STEEL GRADE 8, ZINC COATED, UNC-2A, PLAIN AND SELF-LOCKING (02 APR 1991) [S/S BY ANSI-B18.2.1].