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 5925-00-578-4774
NSN 5895-01-032-1991
NSN 5925-00-199-8277
NSN 5990-01-082-3807
NSN 7035-01-403-2841
NSN 6610-01-633-8931
NSN 6150-01-446-7292
NSN 6110-01-216-1692
NSN 6685-01-581-7759
NSN 6105-01-070-3911
NSN 5950-01-312-6744
NSN 5945-01-393-0358