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 5998-01-363-9139
NSN 6220-00-643-4045
NSN 5990-00-301-3386
NSN 5895-01-629-3973
NSN 5855-00-949-8143
NSN 5835-01-525-3220
NSN 5975-01-440-6989
NSN 5925-00-175-9349
NSN 6145-01-136-2201
NSN 6320-00-456-2092
NSN 7035-01-420-5404
NSN 5996-00-142-5697