Drill America VAC4 Step Drill Bit #12 3/16"-7/8" 12 sizes 118° point

Drill America VAC4 Step Drill Bit #12

The Drill America VAC4 is a single-flute step drill bit made from high-speed molybdenum steel for drilling up to twelve hole sizes in one pass. It suits electricians, plumbers and sheet-metal fabricators who need clean, round holes in thin steel, copper, aluminum or plastic without switching bits. The 118-degree conventional point starts on contact and eliminates the need for centre punching. Each step is marked so you can stop at the required diameter.

Check shank grip and material thickness

Verify that your drill chuck or impact driver accepts a 3/8-inch round shank with three flats before ordering. The bit is designed for thin-wall materials; it will not perform well in stock thicker than the step depth allows. Ensure your tool delivers steady speed and torque for high-speed steel cutting edges. Lubrication is recommended when drilling metal to preserve the uncoated bright finish and extend service life.

Bright finish and self-starting tip

The uncoated bright finish resists galling and can be resharpened on both tip and flute using a bench grinder. A single radial concave flute automatically deburrs the top side of each hole as you drill, leaving a smooth edge ready for fasteners or conduit fittings. The self-starting tip walks less on smooth surfaces, reducing setup time on ladder or overhead work. Round shank with three flats prevents slippage in keyless chucks during high-torque starts.