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 5985-01-564-2887
NSN 6240-01-176-9037
NSN 5945-01-123-9006
NSN 6135-01-226-4071
NSN 5975-01-253-7561
NSN 6135-00-100-8890
NSN 5999-01-523-0930
NSN 6220-01-146-7138
NSN 6610-01-644-2546
NSN 5985-01-228-9823
NSN 5945-01-312-2944
NSN 4140-00-811-2297