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 5915-00-920-2316
NSN 6130-01-348-0133
NSN 2925-01-651-4870
NSN 6650-00-150-1761
NSN 6610-01-153-0700
NSN 6105-01-556-7994
NSN 5895-01-046-9418
NSN 5895-01-654-7960
NSN 4140-01-549-6371
NSN 6240-01-615-1247
NSN 6135-01-502-0018
NSN 5975-00-318-4623