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 5950-00-208-4886
NSN 6240-01-116-3382
NSN 6145-01-484-8735
NSN 5999-00-217-1870
NSN 4140-01-454-3161
NSN 4140-00-012-3506
NSN 4140-00-252-7734
NSN 6130-01-180-0329
NSN 6610-01-352-4768
NSN 5960-00-517-6206
NSN 6110-00-569-8930
NSN 4140-01-167-7574