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 5950-01-125-7455
NSN 6135-01-562-3056
NSN 5950-01-250-6977
NSN 5999-00-738-8262
NSN 5930-01-515-2976
NSN 5905-01-519-1390
NSN 5915-01-378-7199
NSN 5996-01-430-3688
NSN 5920-01-545-7095
NSN 5905-00-156-2982
NSN 5935-00-293-1863
NSN 6220-01-101-4906