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 5930-00-052-9460
NSN 5915-01-375-9855
NSN 5999-01-601-1690
NSN 6620-01-386-5914
NSN 6610-01-062-8557
NSN 5945-01-328-8526
NSN 5930-01-322-8575
NSN 6145-00-820-1029
NSN 7035-01-583-9124
NSN 5999-01-215-1236
NSN 5985-01-518-1720
NSN 5930-01-299-7268