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 5985-01-591-9716
NSN 5855-01-243-2355
NSN 6320-00-405-2348
NSN 6150-00-853-0185
NSN 5945-01-224-7610
NSN 5920-01-473-3489
NSN 6685-01-447-5633
NSN 2925-00-690-8763
NSN 5985-00-507-6261
NSN 5910-00-622-0884
NSN 6610-01-268-4191
NSN 6130-01-212-2647