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 5935-01-167-0834
NSN 6240-01-476-7357
NSN 5965-00-913-9545
NSN 5950-01-498-3810
NSN 6150-01-350-4694
NSN 6135-01-603-8367
NSN 6110-00-381-0602
NSN 6610-01-083-3826
NSN 5855-01-169-1706
NSN 6240-00-107-8192
NSN 5925-01-367-1395
NSN 5910-01-106-7548