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 5960-01-260-7430
NSN 5930-00-542-9470
NSN 5996-01-173-3202
NSN 6110-01-391-8230
NSN 6220-01-506-9654
NSN 6650-01-473-4353
NSN 6320-00-790-4844
NSN 7035-00-756-4374
NSN 6130-01-185-2770
NSN 4140-01-247-0306
NSN 5925-00-286-8502
NSN 6135-00-209-6918