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 5950-00-682-0743
NSN 5999-00-204-5206
NSN 6320-01-532-7491
NSN 5925-01-042-2392
NSN 5950-01-331-8057
NSN 6150-01-554-6163
NSN 5930-01-467-2662
NSN 5985-00-392-8078
NSN 6105-01-384-3063
NSN 5950-01-286-1575
NSN 5855-01-434-2825
NSN 5960-01-412-8650