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 5930-00-625-7833
NSN 5990-01-625-0855
NSN 5855-01-658-6119
NSN 6685-00-718-8056
NSN 6150-00-368-9711
NSN 2925-01-139-7098
NSN 5925-01-178-2555
NSN 5910-00-880-9223
NSN 5925-00-171-0307
NSN 5910-01-245-9735
NSN 5835-00-761-5615
NSN 2925-01-556-0333