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 5920-01-463-3156
NSN 4140-00-322-9987
NSN 5996-01-493-2705
NSN 5960-00-131-6744
NSN 5999-00-525-4320
NSN 5996-01-597-3115
NSN 5935-00-847-7631
NSN 6110-00-099-7113
NSN 5950-01-087-6908
NSN 5998-01-573-8940
NSN 5915-01-411-3544
NSN 6320-00-456-2092