A cylindrical-shaped nut, the end opposite the bearing surface being designed with an internal socket or splines for use with an inserted wrench.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5935-00-456-0271
NSN 5965-00-020-1951
NSN 5935-01-391-1261
NSN 7035-01-653-7254
NSN 6645-01-370-4259
NSN 5999-01-634-0576
NSN 4140-00-317-5014
NSN 6620-00-490-3978
NSN 6610-01-210-2051
NSN 5960-01-201-5804
NSN 5895-01-323-3123
NSN 5996-01-070-9911