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 5999-01-109-7864
NSN 5925-01-266-1093
NSN 6145-01-055-6976
NSN 5998-00-740-7515
NSN 6620-00-346-7591
NSN 7035-01-485-0269
NSN 5915-00-578-1917
NSN 5905-00-722-9905
NSN 5950-01-338-4939
NSN 5915-00-240-7349
NSN 7035-01-615-1677
NSN 5920-01-393-5460