Calibration screw

This part is NO LONGER AVAILABLE. You cannot purchase this part. Can I still get this?

Listed on the following equipment:
Monark - 815e (1986)
Monark - 817 after 1992
Monark - 817 S/N P94612 and up
Monark - 817e - Black
Monark - 865 Mark II

* Images may not be identical to part.