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 5965-01-063-7894
NSN 6240-01-130-1505
NSN 5975-01-037-4305
NSN 6620-01-232-0680
NSN 5930-01-086-7602
NSN 5998-01-148-2907
NSN 5835-01-116-2369
NSN 6650-01-320-1169
NSN 6610-01-168-7943
NSN 5910-01-307-5712
NSN 5975-00-461-7490
NSN 6620-00-596-1951