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 5895-00-617-2893
NSN 5950-01-268-5313
NSN 5935-01-322-4568
NSN 5960-01-495-0859
NSN 5975-00-476-6234
NSN 5990-01-421-3325
NSN 5990-00-087-6177
NSN 5925-01-171-3637
NSN 5935-00-155-4662
NSN 5996-00-456-0895
NSN 5990-01-604-0862
NSN 6110-01-556-7927