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 6685-01-336-2780
NSN 5915-01-584-2404
NSN 5975-00-263-1759
NSN 5905-00-714-1473
NSN 5925-01-270-2118
NSN 2925-01-270-1124
NSN 6110-00-009-3554
NSN 5910-01-289-5863
NSN 5915-01-354-5229
NSN 5960-00-908-7622
NSN 2925-01-527-8745
NSN 2925-01-503-4386