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 5950-01-447-9101
NSN 5920-01-593-4923
NSN 5975-01-464-4293
NSN 5930-00-013-2202
NSN 5920-01-221-0510
NSN 5925-00-977-5843
NSN 5905-00-372-5214
NSN 5910-01-559-9149
NSN 6130-00-877-5743
NSN 6110-00-455-9881
NSN 7035-01-386-5722
NSN 5996-01-078-3742