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Triumph T1HD 31/64" High Speed Steel Jobber Drill Bit

Brand: Triumph Mfg#: 12531
Product#: 1723164
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ThunderBit® High Performance drills are made from industrial-grade steel, with a friction-reducing black and bronze oxide surface treatment for higher drilling speeds. Optional Titanium Nitride (TiN) coating provides the ultimate performance and durability. Unique spiral flute design improves chip ejection and coolant flow to the point; and the heavy-duty core guarantees increased strength and reduced breakage


  • Premium grade steel
  • Heavy duty construction
  • Unique flute design for superior material removal


  • Brand: Triumph
  • Product Line: T1HD
  • Type: Heavy Duty
  • Overall Length: 5.875 in
  • Flute Length: 4.375 in
  • Point Angle: 135 deg
  • Finish: Black/Bronze Oxide
  • Length Group: Jobber
  • Material: High Speed Steel
  • Diameter: .4844 in
  • Series: T1HD
  • Applicable Materials: Iron, Steel, Stainless Steel, Wood
  • Point Type: Split
  • Shank Type: Round Straight
  • Flute Type: Spiral