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 5996-01-267-4722
NSN 6110-01-485-1622
NSN 5975-01-535-7193
NSN 5945-00-948-1420
NSN 5996-01-227-3005
NSN 7035-01-354-9382
NSN 6610-00-467-7846
NSN 5975-00-257-2793
NSN 5999-01-032-4800
NSN 5925-01-465-6279
NSN 5835-01-018-6294
NSN 6150-01-443-9431