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 5960-01-304-7178
NSN 5835-01-268-1924
NSN 5999-01-623-7433
NSN 6150-00-287-6879
NSN 6620-01-597-9815
NSN 5935-01-243-4062
NSN 5985-00-367-2711
NSN 6145-00-577-8480
NSN 5895-01-370-1616
NSN 5910-01-008-4283
NSN 5910-01-363-3371
NSN 5855-00-821-7512