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 6105-01-352-9919
NSN 4140-01-088-5961
NSN 6650-00-415-0273
NSN 6610-01-411-6800
NSN 5915-01-422-9979
NSN 6685-00-883-4608
NSN 5895-01-268-4222
NSN 5915-01-499-5242
NSN 6240-01-537-0629
NSN 5999-01-307-3674
NSN 5975-01-350-3244
NSN 6220-01-197-7387