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 4140-00-392-2561
NSN 6610-01-657-1773
NSN 6685-01-126-7205
NSN 5965-00-255-3889
NSN 5965-00-894-0015
NSN 4140-00-287-5476
NSN 6145-01-514-5315
NSN 5945-00-475-2754
NSN 5935-01-547-7055
NSN 5996-00-356-0680
NSN 5855-01-207-5616
NSN 6130-01-408-5138