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 5960-00-247-8903
NSN 6610-01-042-8621
NSN 5935-01-155-9921
NSN 5965-00-191-6788
NSN 5950-00-255-6264
NSN 5910-00-828-2072
NSN 6320-01-659-2819
NSN 5945-00-740-6816
NSN 5895-00-468-4103
NSN 5975-00-275-1962
NSN 6240-00-057-9498
NSN 5855-00-237-4088