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 6130-01-069-3772
NSN 6135-01-459-6424
NSN 5915-00-153-0002
NSN 5965-00-246-5612
NSN 5920-01-346-0844
NSN 5935-01-359-1999
NSN 7035-01-293-3431
NSN 5930-00-214-0450
NSN 7035-00-529-3128
NSN 6110-00-081-0927
NSN 7035-01-287-9817
NSN 5996-01-463-9480