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 5950-00-995-8614
NSN 5895-00-081-2219
NSN 5990-01-537-1124
NSN 5915-01-480-1410
NSN 5895-01-391-7991
NSN 6240-00-079-0112
NSN 5975-00-181-5825
NSN 6685-01-145-0270
NSN 4140-01-429-8545
NSN 6650-00-063-4484
NSN 6650-01-334-5378
NSN 5915-01-506-3539