Chicago-Latrobe 52439 39/64 in 118 Degree Silver & Deming Drill with 1/2 Reduced Shank

39/64 inch Silver & Deming Drill Bit

The Chicago-Latrobe 52439 is a high-speed steel drill bit with a 118-degree point angle and a black oxide finish. It features a reduced 1/2 inch shank designed for use in drill chucks that cannot accommodate a full-sized shank. This accessory targets machinists and maintenance technicians who need to drill large holes with standard capacity drill presses or handheld drills.

1/2 inch Reduced Shank Compatibility

The reduced shank allows this large-diameter bit to fit into a 1/2 inch chuck, overcoming the standard limitation where chuck capacity restricts maximum bit size. Users must ensure their drill press or handheld drill provides sufficient torque and rigidity for a 39/64 inch cutting diameter. The 118-degree point angle is suited for general-purpose drilling in metal but requires appropriate feed pressure to prevent walking on hard surfaces.

39/64 inch Drill Bit Size

The specific 39/64 inch diameter determines if this bit matches the required hole size for the application, such as tapping or clearance drilling. Buyers needing a different fractional, metric, or letter size must select another bit, as this product only fulfills this single diameter requirement. The high-speed steel construction and black oxide finish support general metalworking but do not suit hardened steel or high-volume production without frequent resharpening.