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 5920-01-266-5749
NSN 5975-01-321-4472
NSN 5915-00-604-8816
NSN 5998-01-104-4783
NSN 6105-00-943-5183
NSN 6240-01-039-2125
NSN 2925-00-149-0760
NSN 5999-01-644-0269
NSN 5895-01-035-1166
NSN 5920-01-351-5536
NSN 5920-00-594-3124
NSN 6685-01-228-2893