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 5998-01-410-7788
NSN 5930-00-019-8338
NSN 6240-00-172-8451
NSN 5935-00-903-8078
NSN 5975-00-655-3136
NSN 6130-00-692-2916
NSN 7035-01-222-8090
NSN 5999-01-480-9642
NSN 6320-01-651-5210
NSN 5915-01-552-6356
NSN 6110-00-181-5634
NSN 5945-01-609-9809