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 5905-01-585-8771
NSN 5925-00-155-2587
NSN 5930-00-038-1853
NSN 5895-01-408-6020
NSN 5985-01-226-3068
NSN 5950-01-443-8982
NSN 6130-01-492-6179
NSN 6320-00-036-3688
NSN 2925-01-527-5335
NSN 4140-01-256-0910
NSN 5950-01-040-0560
NSN 2925-00-613-2515