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 6610-01-212-2969
NSN 5930-01-563-0584
NSN 5835-01-519-3834
NSN 5945-00-963-0889
NSN 5975-01-136-4988
NSN 2925-00-288-1394
NSN 5998-01-021-3019
NSN 6105-00-948-3817
NSN 4140-01-283-5741
NSN 5965-01-479-8214
NSN 6685-01-113-6708
NSN 2925-00-084-8462