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.
Classification: Nuts of iron or steel
NSN 4140-01-382-6831
NSN 6150-01-431-7624
NSN 5999-01-596-5424
NSN 5965-00-217-2476
NSN 6130-00-299-6920
NSN 6135-01-010-0891
NSN 6105-00-848-9835
NSN 6610-01-067-4359
NSN 5855-01-433-2220
NSN 5985-01-361-8982
NSN 5930-00-839-8541
NSN 6110-01-620-1122