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 6620-00-527-6523
NSN 5855-01-423-7473
NSN 5910-00-198-9779
NSN 6645-01-446-5025
NSN 6240-01-323-7032
NSN 5996-00-106-4177
NSN 5950-00-583-5809
NSN 6685-01-607-6251
NSN 5910-01-603-7835
NSN 5950-00-643-4023
NSN 5985-01-588-2492
NSN 5835-00-393-1996