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 6240-00-357-7976
NSN 5950-00-264-1146
NSN 5965-00-275-0491
NSN 5985-00-671-9707
NSN 5935-01-616-7345
NSN 5985-00-679-9529
NSN 7035-01-606-5440
NSN 5895-00-524-0229
NSN 2925-01-381-5307
NSN 5999-01-144-8505
NSN 5965-00-894-0015
NSN 5910-00-452-1418