A nut round in shape, whose outer surface or portion(s) is/are knurled. It may have provisions for external wrenching. An integral feature is incorporated for locking on the threads of a mating member.
NSN 7035-01-508-0619
NSN 5998-01-359-7729
NSN 6145-01-143-7498
NSN 5945-01-058-5178
NSN 5950-01-289-5205
NSN 6105-01-316-9083
NSN 5915-00-378-5585
NSN 5998-00-144-4404
NSN 5999-01-406-6274
NSN 6105-00-230-4085
NSN 6130-00-186-8460
NSN 5998-00-321-1202