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 5935-00-865-6570
NSN 5965-00-110-3330
NSN 5915-01-099-6086
NSN 6240-01-612-8021
NSN 6610-01-549-1802
NSN 5996-00-982-0131
NSN 6135-01-074-8220
NSN 6145-00-952-1735
NSN 6110-01-008-5728
NSN 5985-01-643-6125
NSN 5960-01-583-4737
NSN 5895-01-634-0630