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 4140-01-197-7658
NSN 6135-01-214-6441
NSN 5895-01-148-0047
NSN 6650-01-482-6021
NSN 5935-00-347-9805
NSN 6240-01-392-1334
NSN 6135-01-415-4124
NSN 6320-00-905-0543
NSN 5930-01-343-5552
NSN 5835-01-647-6426
NSN 6135-00-162-2437
NSN 5915-01-197-9397