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 6620-00-895-6902
NSN 6620-01-085-8688
NSN 5999-01-660-5728
NSN 5996-01-421-3373
NSN 6620-01-284-6526
NSN 5895-01-459-7527
NSN 6650-01-557-4143
NSN 6145-00-243-0583
NSN 2925-00-802-1418
NSN 6320-00-456-0836
NSN 6145-00-322-7146
NSN 5985-01-473-8217