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 6685-01-442-0893
NSN 2925-00-898-9135
NSN 5895-01-185-4286
NSN 5910-00-378-0354
NSN 5999-01-458-9718
NSN 7035-00-541-8516
NSN 6645-01-169-9054
NSN 5905-01-270-1075
NSN 6650-00-732-5031
NSN 5996-01-446-8198
NSN 5905-01-289-7665
NSN 5960-01-465-6847