Dormer Drill Bit HSS 3/16″

TiN-Tip Thermal Protection The Titanium Nitride coating at the point reduces friction and acts as a heat shield. This allows the bit to maintain its sharp cutting edge for much longer than standard HSS bits, even during continuous use.

Precise 118° Split Point The self-centering split point geometry ensures the bit starts exactly where it is placed. It prevents “walking” on smooth surfaces, eliminating the need for a center punch and ensuring accurate hole positioning.

Optimized Flute Design Engineered with specialized flutes that facilitate rapid chip evacuation. This is critical for 3/16″ bits to prevent “chip packing,” which is a leading cause of bit breakage in deep-hole drilling.

Steam Tempered Finish The flutes feature a steam-tempered (blue) finish that improves the retention of cutting lubricants, ensuring a smoother cut and a higher quality internal surface finish.

Broad Material Application Highly effective for drilling into a wide variety of materials, including carbon steel, alloy steel, grey cast iron, and non-ferrous metals like aluminum and brass.

Universal Fit The 4.76mm diameter ensures a perfect fit in any standard drill chuck, from small 1/4″ hex-style (non-quick change) chucks to heavy-duty 1/2″ industrial chucks.