Does the F60 use a screw on the exterior side to mount the lower portion?

No, the F60 handle-set will require door prep that allows a 3/8 hole to be drilled on the door that matches the alignment with the lower adjustable through bolt. This is typically a 8 1/2- 9 1/2 inch center-to-center range. Then the F60 will mount with a screw on the interior side of the door and concealed with a screw bolt cap. 


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