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 6220-01-190-8605
NSN 5930-01-588-2224
NSN 5910-01-181-8095
NSN 5945-01-592-3379
NSN 6135-00-911-9321
NSN 6685-01-466-3185
NSN 6685-01-187-3318
NSN 5920-00-715-2541
NSN 5960-01-029-2940
NSN 5996-01-047-4518
NSN 5985-00-936-6924
NSN 5920-01-185-2222