MS51490 (NOTICE 2), MILITARY STANDARD: SCREW, CAP, HEXAGON HEAD (FINISHED HEXAGON BOLT), STEEL, GRADE 5, UNF-2A (29 OCT 2004).
MS51490 (NOTICE 2), MILITARY STANDARD: SCREW, CAP, HEXAGON HEAD (FINISHED HEXAGON BOLT), STEEL, GRADE 5, UNF-2A (29 OCT 2004).