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 5910-01-437-8145
NSN 6135-00-276-7625
NSN 6240-01-414-6074
NSN 6240-01-591-7953
NSN 5998-01-641-7913
NSN 5985-01-165-3224
NSN 5999-00-954-7673
NSN 5935-00-709-8174
NSN 4140-00-696-4556
NSN 5998-01-180-2142
NSN 6220-01-276-0756
NSN 6620-00-728-3445