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 5985-00-674-7229
NSN 6610-01-224-3814
NSN 6685-01-506-9553
NSN 5975-00-142-2450
NSN 6620-00-489-7266
NSN 6145-01-507-4826
NSN 5855-01-656-6808
NSN 5930-01-500-4408
NSN 6110-01-355-4536
NSN 6220-01-054-4925
NSN 5945-00-618-4761
NSN 5930-01-484-3646