5/16" Jobber ThunderBit+ 3-Flats (144 pack)

About This Item: The ThunderBit® series from Triumph has been one of our best selling high-speeds for over twenty years. It’s arguably our best all-around drill bit and now with the new 3-flat shanks, slippage is a thing of the past. It cuts ferrous and non-ferrous metals as well as wood. Use it in a drill press or out in the field. You’ll enjoy an 8:1 holes-drilled ratio compared to standard general purpose drill bits and the tapered flute means the bit thickens near the shank, preventing snapping. Go nuts! Specifications: Part Number: 14520.20 Size: 5/16" Decimal Equivalent: .30125 Flute Length: 3-3/16" Overall Length: 4-1/2" Pack Size: 144 Features: Point: 135° Self-Centering Split Point Shank Style: 3-Flats Material: Premium Grade High Speed Steel Coating/Finish: Black and Bronze Oxide Other: Heavy-Duty Core For use in: Iron, Cast Steel, Low and Medium Carbon Steel, High Alloy Steel, Stainless and PH Tough, Medium and High-Tensile Strength Alloys About this Manufacturer: For over 60 years Triumph Twist Drill has been manufacturing hundreds of thousands of drills a week. At our 70,000 square foot facility located in Chisholm, MN, we incorporate cutting edge machinery and equipment to produce exceptional performance tools.