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 5925-01-061-6491
NSN 6130-01-236-7952
NSN 5930-01-036-5783
NSN 6620-00-740-3699
NSN 6610-00-483-2073
NSN 6150-00-358-6552
NSN 6110-00-375-6279
NSN 6150-00-891-7922
NSN 6145-00-225-8709
NSN 6645-00-269-8440
NSN 6610-01-310-0553
NSN 6620-01-078-6372