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 6645-00-849-4429
NSN 5930-01-351-9080
NSN 5965-00-100-1291
NSN 7035-01-218-6960
NSN 5960-00-705-9094
NSN 5990-01-548-5979
NSN 6650-01-651-0842
NSN 5999-01-348-3529
NSN 5998-01-386-3123
NSN 6110-00-418-3294
NSN 6130-00-960-9158
NSN 5999-01-481-8642