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 5996-00-014-7811
NSN 5945-01-233-2326
NSN 4140-01-059-2095
NSN 6135-01-014-9755
NSN 6145-01-337-3408
NSN 5960-01-003-8480
NSN 5855-01-057-2200
NSN 6105-01-035-7197
NSN 6145-01-420-7452
NSN 5945-00-265-1762
NSN 2925-01-424-9341
NSN 6650-01-063-7714