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 6650-00-023-1638
NSN 5960-01-302-7583
NSN 5835-01-398-3859
NSN 6220-01-173-3177
NSN 6150-01-045-7088
NSN 5990-01-143-2518
NSN 6110-00-068-4518
NSN 6150-01-029-2146
NSN 7035-01-053-4769
NSN 5996-00-218-1123
NSN 6645-01-063-8243
NSN 6110-01-300-8127