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 5910-00-957-7826
NSN 6320-01-449-1014
NSN 5935-01-644-0341
NSN 5915-00-553-3650
NSN 5996-00-455-4001
NSN 5835-01-121-6953
NSN 5925-01-251-6897
NSN 5855-00-832-9341
NSN 5996-01-476-7550
NSN 5945-01-257-0155
NSN 6135-01-100-3593
NSN 5905-01-029-4207