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 5835-01-611-8912
NSN 5945-00-281-4578
NSN 6145-00-615-2019
NSN 6645-01-522-1512
NSN 6135-01-415-1163
NSN 6130-01-140-2792
NSN 5965-01-007-1963
NSN 5999-01-077-3480
NSN 5855-01-464-3152
NSN 5985-00-588-1435
NSN 5975-01-149-1410
NSN 5935-01-227-1494