Drill America DWDDL 5/8" 12" Reduced-Shank Drill Bit

5/8″ 12″ Reduced-Shank Drill Bit

The Drill America DWDDL bit is a high-speed steel tool with a 0.625-inch cutting diameter and 12-inch overall length. Its 0.5-inch round shank fits standard three-jaw chucks while the reduced-shank design allows drilling larger holes without a larger chuck capacity. General-purpose machinists and maintenance technicians gain extra reach for deep-hole work in iron and steel.

118-Degree Point and Spiral Flutes

The 118-degree cutting angle suits broad material ranges but is not optimised for hard or abrasive alloys that demand split-point or specialised geometries. Black-oxide finish adds lubricity and holds coolant near the edge, yet the treatment does not replace flood coolant in high-heat applications. Right-hand spiral flutes evacuate chips upward, so the bit is unsuitable for left-hand spindle rotation.

9-Inch Flute Length

The 9-inch flute length defines the maximum effective drilling depth before chip packing becomes a concern. Users needing deeper holes in a single pass cannot meet that need with this bit. Builders requiring a larger shank diameter for heavy-duty toolholders must select a different series.