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 7035-01-363-2748
NSN 6620-00-333-5503
NSN 5960-01-599-9821
NSN 5945-01-444-3970
NSN 5930-01-082-2794
NSN 6240-01-206-4809
NSN 6645-00-183-8812
NSN 5998-01-303-7711
NSN 6320-01-515-7913
NSN 4140-01-139-0141
NSN 5985-00-195-6545
NSN 5905-00-392-0122