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 7035-01-594-0182
NSN 6150-01-101-5183
NSN 6650-01-414-3333
NSN 5915-01-633-9845
NSN 5945-00-529-0103
NSN 5960-00-925-3721
NSN 5950-01-062-0266
NSN 6110-00-211-7435
NSN 6685-01-147-8611
NSN 5998-01-145-5100
NSN 4140-01-431-6560
NSN 6610-00-126-3021