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 5985-00-917-6016
NSN 5999-01-190-9495
NSN 5910-01-073-4601
NSN 5905-01-214-3472
NSN 5935-00-725-0927
NSN 5920-01-589-2844
NSN 5945-00-240-1684
NSN 5915-00-495-8414
NSN 6220-01-379-3498
NSN 5895-01-162-7587
NSN 6645-01-055-5465
NSN 5996-01-223-4665