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 6110-01-218-8193
NSN 5998-01-358-1944
NSN 6685-01-205-8047
NSN 6135-01-348-4056
NSN 6610-01-193-8861
NSN 6240-01-319-2549
NSN 4140-01-070-4928
NSN 5990-00-481-7208
NSN 6220-01-587-9932
NSN 5950-00-871-9546
NSN 6220-00-240-6443
NSN 5998-01-427-1087