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 4140-01-394-6288
NSN 5905-00-900-2784
NSN 5975-01-393-0238
NSN 5960-01-057-7096
NSN 6145-01-651-8266
NSN 2925-01-507-4797
NSN 2925-01-412-9520
NSN 5925-01-157-9548
NSN 5855-00-288-1408
NSN 5920-01-352-3625
NSN 5855-01-270-6847
NSN 7035-00-529-3128