NOS Cotter Pin Plated 7/64″x1-1/2″ 100ea

A box of 1950-1960 era cotter pins. I’m not sure if this is a common size. Also not sure of the KZ prefix to the FSN.

Official Nomenclature: Pin, Cotter: Steel Plated, 7/64″x1-1/2″ 100ea

Part/Stock numbers: 5315-597-7894, 590177

Applicable SNL’s: Unknown