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 6320-01-607-1491
NSN 2925-01-230-8057
NSN 5996-01-580-4604
NSN 5895-01-014-1382
NSN 5985-01-063-4001
NSN 6320-00-681-1324
NSN 6685-01-634-0611
NSN 5965-00-885-8974
NSN 7035-01-352-6235
NSN 5960-00-009-1622
NSN 5950-01-028-4105
NSN 2925-01-424-9341