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 5910-01-508-4213
NSN 5935-00-386-7212
NSN 5935-00-234-1599
NSN 5930-00-062-5032
NSN 7035-01-391-7470
NSN 6620-00-482-1073
NSN 6620-00-925-7767
NSN 5920-01-646-7992
NSN 5999-01-425-1879
NSN 6650-01-156-6736
NSN 5935-01-315-0810
NSN 6150-01-166-5695