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 5915-00-597-2369
NSN 6620-00-155-2608
NSN 5935-01-447-8735
NSN 5895-00-139-1403
NSN 5935-00-965-8556
NSN 4140-01-093-3564
NSN 5895-01-654-5633
NSN 5935-01-433-8070
NSN 5996-00-967-4943
NSN 6240-01-423-6771
NSN 6685-00-602-7209
NSN 5960-00-379-4466