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 6645-01-607-2132
NSN 5996-01-282-7931
NSN 5930-00-960-7842
NSN 5985-01-197-8483
NSN 5960-01-094-5958
NSN 6620-01-081-1042
NSN 5910-01-127-5430
NSN 6135-01-100-3593
NSN 4140-00-782-1169
NSN 6685-01-337-7692
NSN 6685-00-112-1240
NSN 5945-01-297-2455