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 6620-00-970-2363
NSN 5960-01-224-7151
NSN 5990-00-128-6289
NSN 5855-00-763-2155
NSN 5998-00-175-5328
NSN 5985-01-389-3077
NSN 5895-01-157-9330
NSN 6650-00-364-7866
NSN 5920-00-936-1661
NSN 4140-00-211-5970
NSN 6135-01-265-1384
NSN 5915-00-884-4773