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 5920-01-626-9457
NSN 6610-01-381-3181
NSN 5990-01-185-5346
NSN 5975-01-473-6033
NSN
NSN 5855-00-014-5008
NSN 6320-00-194-4252
NSN 5925-00-958-8215
NSN 6240-00-937-2706
NSN 5950-01-348-2786
NSN 6145-01-630-3482
NSN 5996-00-161-4202