A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 5999-01-238-6819
NSN 5998-00-277-4990
NSN 4140-00-186-3062
NSN 6150-00-096-6477
NSN 6620-01-652-4349
NSN 6130-01-456-0380
NSN 6130-01-135-9237
NSN 5905-00-170-1869
NSN 5950-00-256-9352
NSN 5960-00-915-4175
NSN 5945-00-405-4034
NSN 6620-01-400-2221