Approximately one third of all screw machine parts produced in the United States are used in the assembly of automobiles or other segments of the automotive industry.

Below is an assortment of parts including flow valves for shock absorbers, needle valves for carburetors, and tire valve inserts. Other Davenport-made automotive parts include bleeder screws, hydraulic fluid regulators used on brakes, and pump shafts for windshield wipers.

A wide range of components for diesel engines and spark plugs can also be produced on the Davenport. The complicated choke shaft is made easily with the use of the slotter and traveling cross drill and cross tap attachments. It is parted with the sawing off attachment. The air hose valve component is produced with the assistance of the straddle milling attachment. This part is also swaged using a Davenport thread roll attachment.