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 6645-01-267-5505
NSN 6650-00-241-0970
NSN 6240-01-633-9357
NSN 7035-01-135-0050
NSN 6150-00-633-4647
NSN 6135-01-167-7604
NSN 7035-01-305-1950
NSN 5975-00-442-3500
NSN 5965-00-492-9642
NSN 5835-01-117-3011
NSN 5950-01-180-5264
NSN 6145-00-014-5759