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 6105-01-381-1088
NSN 5920-00-099-0826
NSN 6645-01-208-5090
NSN 5998-00-559-5463
NSN 5998-01-363-2045
NSN 6105-00-956-2485
NSN 2925-01-619-4825
NSN 5996-01-151-1607
NSN 6240-01-339-9698
NSN 5925-01-406-5626
NSN 5925-01-349-3081
NSN 6150-00-881-3439