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 5960-01-439-9517
NSN 2925-01-243-0328
NSN 5945-01-267-5294
NSN 6240-00-155-8728
NSN 6145-01-611-2036
NSN 6220-01-496-4988
NSN 5920-00-271-3217
NSN 6620-01-199-8580
NSN 6145-01-655-8955
NSN 5920-01-133-5286
NSN 5930-00-436-9678
NSN 6320-01-330-8054