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 2925-01-464-3093
NSN 2925-01-156-4335
NSN 6620-01-286-2204
NSN 6110-01-015-2866
NSN 6110-00-156-9823
NSN 5910-01-007-0497
NSN 5965-01-144-7597
NSN 6105-00-265-7545
NSN 6320-00-823-2015
NSN 6150-01-005-0150
NSN 5975-00-490-1571
NSN 7035-00-205-1932