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 6130-01-307-0286
NSN 6685-01-633-0858
NSN 6685-00-166-2509
NSN 5996-01-271-1542
NSN 5895-01-045-0848
NSN 5920-00-546-5624
NSN 5950-01-410-7685
NSN 5960-01-278-9394
NSN 6110-00-202-1021
NSN 5960-01-257-0225
NSN 6110-00-793-1808
NSN 5920-01-579-7485