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 5965-01-354-1677
NSN 5960-01-258-0814
NSN 6650-01-304-4254
NSN 6145-00-455-7237
NSN 5999-00-595-6786
NSN 5999-01-292-7663
NSN 6650-01-658-7194
NSN 2925-01-187-0423
NSN 5975-00-604-0479
NSN 5920-01-493-3938
NSN 6150-00-383-2517
NSN 2925-01-633-4048