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 6240-01-201-6965
NSN 5975-01-224-6215
NSN 5925-01-117-8169
NSN 5985-01-318-1818
NSN 6240-00-854-1962
NSN 5920-01-530-2761
NSN 5905-01-580-9631
NSN 5910-01-414-7646
NSN 5930-01-004-8339
NSN 6150-00-853-0185
NSN 6620-01-462-5196
NSN 5935-01-245-9723