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 5945-00-179-3827
NSN 5950-00-871-6532
NSN 6105-00-451-1206
NSN 6320-00-456-0836
NSN 5910-01-058-1395
NSN 5935-01-441-2691
NSN 5985-00-658-5793
NSN 6240-01-276-2019
NSN 6130-01-352-5644
NSN 5930-01-502-9135
NSN 5985-00-281-0810
NSN 5895-01-441-8242