A nut having 1 convex, spherical bearing surface and 6 flat sides. Items may have a removable collar. See also nut (1), plain, cone seat, hexagon.
NSN 5925-01-650-7666
NSN 6650-01-299-8636
NSN 6320-01-512-2031
NSN 5920-01-027-0660
NSN 5925-00-940-8088
NSN 5895-01-250-0856
NSN 5965-01-334-9275
NSN 5965-00-934-3495
NSN 5945-01-106-1703
NSN 6645-00-456-7653
NSN 5996-01-077-2231
NSN 6135-01-035-1871