OptionalframeWhere the feature starts on the axis, the axis along the normal and the side it faces along the direction. Left out, the ground, facing +Y.
OptionaldiameterThe shaft's diameter in model units.
OptionaldepthHow far the flat cuts in from the shaft's surface, in model units, less than the diameter.
OptionallengthThe flat's length along the axis, in model units.
A flat on a round shaft for
parts.mechanical.machining.flatTool: the shaft's diameter, how deep the flat goes and how long it is.