Hybrid threading tool with cutting portion and rolling portion

A method of manufacturing a hybrid threading tool for threading a workpiece comprising:

• making a plurality of cutting teeth to define a cutting portion of the hybrid threading tool;
• making a plurality of forming teeth to define a forming portion of the hybrid threading tool, the forming portion arranged with the cutting portion along the longitudinal axis;
• the plurality of cutting teeth configured to cut a first threading into a workpiece and the plurality of forming teeth configured to plastically deform the first threading into a second threading for the workpiece.

A hybrid threading tool for threading a main bearing bolt hole of an engine block, the threading tool defining a longitudinal axis and comprising:

• a cutting portion with a plurality of cutting teeth, the cutting portion being tapered, the plurality of cutting teeth configured to cut a first threading into the main bearing bolt hole at a first major diameter;
• and
• a forming portion that is attached to the cutting portion and arranged therewith along the longitudinal axis, the forming portion including a plurality of forming teeth configured to plastically deform the first threading into a second threading for the main bearing bolt hole, the second threading having a second major diameter, the first major diameter being, at most, ninety-five percent (95%) of the second major diameter.