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 5835-01-384-3206
NSN 6240-01-327-1694
NSN 2925-01-100-3694
NSN 5999-00-799-6816
NSN 5945-01-420-5891
NSN 5998-01-619-4523
NSN 5920-00-477-4408
NSN 5925-01-254-6591
NSN 7035-01-580-0610
NSN 6610-01-025-8283
NSN 5895-01-586-0913
NSN 6150-01-421-3523