Polar False Clamp Pin (Polar # 206035)
47mm (1.85") long. These are notched for the latch pin, as shown in the photo. These pins are used in all Polar cutters built before 1985.
For installation, the underside of the original pin must be drilled or ground off, then the pin can be knocked out with a hammer and punch. After inserting the new pin, the bottom end gets hammered or peened over to install them in the false clamp.
See P11 for false clamp pins used after 1985.