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 5965-01-595-9498
NSN 5935-00-199-0333
NSN 5950-00-220-6637
NSN 5895-00-516-9212
NSN 6650-01-448-4996
NSN 5855-01-502-2789
NSN 5998-01-270-8739
NSN 5835-01-203-1871
NSN 6220-01-591-4996
NSN 5999-01-157-6626
NSN 4140-00-905-6570
NSN 6320-01-384-3850