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 6620-00-241-5264
NSN 5945-01-243-1131
NSN 6610-00-420-8475
NSN 6620-00-904-2139
NSN 5925-00-529-0441
NSN 6145-01-535-7062
NSN 5910-01-436-4527
NSN 6150-00-924-9853
NSN 5950-01-296-6767
NSN 5855-01-654-7314
NSN 6145-00-912-6116
NSN 6145-01-271-2597