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 6145-00-013-9939
NSN 5915-01-235-6318
NSN 5905-01-074-0153
NSN 5960-01-078-7692
NSN 7035-01-561-1003
NSN 6645-01-368-9990
NSN 6220-01-508-1003
NSN 5915-01-545-5418
NSN 5996-01-306-4529
NSN 6220-01-240-8874
NSN 6610-00-159-1110
NSN 5935-01-422-8721