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.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5905-01-012-2520
NSN 5998-01-504-1028
NSN 6240-01-237-1481
NSN 6135-01-017-3001
NSN 6650-00-525-3446
NSN 5855-01-622-9699
NSN 5975-00-203-8416
NSN 5930-01-395-0375
NSN 6685-01-616-8902
NSN 5990-00-189-6649
NSN 6650-00-059-6268
NSN 5998-01-181-5312