No other part numbers with same form, fit, and function found.
A nut having an externally splined sleeve which holds it in position when forced into a hole of slightly smaller diameter.
NSN 6645-01-230-5073
NSN 6645-01-235-6137
NSN 5999-00-827-0703
NSN 6645-01-106-6369
NSN 5965-00-052-9184
NSN 5935-01-641-7230
NSN 6650-01-446-6646
NSN 4140-01-121-7902
NSN 6610-00-096-1682
NSN 5975-00-707-6245
NSN 5915-01-445-6577
NSN 5975-00-189-0857