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 6105-01-263-3668
NSN 5905-00-267-9551
NSN 6610-01-371-3006
NSN 5945-01-483-5561
NSN 6620-01-105-1436
NSN 5999-01-025-5337
NSN 6220-00-869-4348
NSN 5915-01-514-7136
NSN 5835-01-486-0545
NSN 5975-00-910-8680
NSN 5855-01-112-7725
NSN 5960-00-226-8443