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 5855-01-418-0089
NSN 5915-00-814-4964
NSN 5985-01-535-8393
NSN 6645-01-152-1092
NSN 6685-01-437-7778
NSN 2925-00-278-9468
NSN 5895-00-495-2190
NSN 6685-01-473-0390
NSN 5915-01-633-9845
NSN 5835-01-471-5848
NSN 5999-01-295-3985
NSN 5905-01-414-9976