MS51056 THRU MS51061
 |
- MS51057, MILITARY STANDARD, SETSCREW, SLOTTED, FLAT POINT, CORROSION RESISTING (CHRONIUM) STEEL, PASSIVATED, NF-2A (7 MAY 1958) [S/S BY MS51031]
- MS51031B, MILITARY STANDARD, SETSCREW-HEXAGON SOCKET, FLAT POINT, CORROSION-RESISTING STEEL, PASSIVATED, UNF-3A, PLAIN AND SELF-LOCKING (22 DEC 1972) [S/S BY NASM51031]
- FF-S-200B, FEDERAL SPECIFICATION SETSCREWS: HEXAGON SOCKET AND SPLINE SOCKET, HEADLESS (17 AUG 2004)
