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 6135-01-375-6724
NSN 5835-00-918-8169
NSN 5950-01-488-7010
NSN 6650-01-296-0883
NSN 4140-01-368-7097
NSN 5930-01-023-1826
NSN 6240-01-139-3377
NSN 5915-01-214-8849
NSN 5998-01-447-2952
NSN 5950-01-089-8893
NSN 5925-00-610-1273
NSN 4140-01-304-9915