Chicago-Latrobe 55440 118 Degree Silver & Deming Drill 1/2 Reduced Shank

Chicago-Latrobe 55440 Drill Bit

This reduced-shank drill bit is built for machinists and maintenance technicians who need to bore larger holes using a standard 1/2-inch chuck. It is manufactured from high-speed steel to withstand the heat and wear of drilling through steel and other tough alloys.

5/8 Inch Capacity and 118 Degree Point

The 5/8-inch cutting diameter handles medium-to-large hole-making in a single pass, while the 118-degree point angle centres quickly without a pilot hole in most ferrous materials. The black-oxide finish adds lubricity and corrosion resistance, though the bit will dull faster in hardened steels or abrasive composites.

1/2 Inch Reduced Shank Fit

The shank is turned down to 1/2 inch so the bit fits any three-jaw chuck rated for that capacity, eliminating the need for a larger drill press or special holder. Buyers whose chucks accept only smaller diameters cannot use this bit.