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 5960-01-144-9183
NSN 5950-00-351-6438
NSN 5975-01-117-7324
NSN 6135-01-357-0621
NSN 5920-01-497-7618
NSN 5996-01-522-5125
NSN 6110-01-217-8817
NSN 6110-00-635-7784
NSN 5905-01-452-6609
NSN 5998-01-409-0864
NSN 5910-00-281-2449
NSN 5998-01-503-2605