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 5999-01-310-7715
NSN 5960-01-185-1885
NSN 5960-01-276-7836
NSN 5965-00-702-7257
NSN 4140-01-383-7639
NSN 5999-00-899-4809
NSN 5985-01-419-7000
NSN 6620-00-831-2232
NSN 5975-01-171-0725
NSN 5835-01-085-9591
NSN 7035-01-333-9298
NSN 5975-01-455-0215