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 5999-01-563-7071
NSN 6320-01-466-4175
NSN 6220-01-529-9341
NSN 5998-01-341-7136
NSN 5920-01-463-6770
NSN 6320-01-407-8663
NSN 5965-00-201-7479
NSN 5998-01-320-4250
NSN 5990-01-234-8646
NSN 6220-01-597-2599
NSN 5960-01-089-8155
NSN 6220-01-354-7598