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 5930-00-084-8530
NSN 6110-01-492-3456
NSN 6320-00-977-3930
NSN 6240-01-274-3494
NSN 6320-01-397-9995
NSN 6650-01-257-7237
NSN 5855-01-462-3208
NSN 5925-00-456-0651
NSN 6685-00-012-3734
NSN 6650-01-455-4327
NSN 5985-00-706-8491
NSN 5930-00-494-3375