A nut having one convex, spherical bearing surface and 6 flat sides. Items may have a removable collar. An integral feature is incorporated for locking on the threads of a mating member. See also nut (1), self-locking, cone seat, hexagon.
Classification: Nuts of iron or steel
NSN 4140-00-252-0879
NSN 5905-00-146-2375
NSN 5855-00-327-2112
NSN 6685-01-541-3722
NSN 7035-01-474-9537
NSN 6135-00-500-2082
NSN 6145-01-514-0593
NSN 6650-00-170-5095
NSN 6110-01-082-8958
NSN 6320-01-198-4024
NSN 5835-00-465-3762
NSN 5905-01-187-1888