MS51491 (NOTICE 1), MILITARY STANDARD: SCREW, CAP, HEXAGON HEAD (FINISHED HEXAGON BOLT), STEEL, GRADE 5 UNC-2A (10 JUN 1996).
MS51491 (NOTICE 1), MILITARY STANDARD: SCREW, CAP, HEXAGON HEAD (FINISHED HEXAGON BOLT), STEEL, GRADE 5 UNC-2A (10 JUN 1996).