Triumph Twist Drill 094137 Reduced Shank Drill Bit

Product Description

The TRIUMPH TWIST DRILL 094137 is a reduced shank drill bit designed for drilling operations that require a 37/64 inch (0.5781 inch) cutting diameter with a 1/2 inch Weldon shank. Built from high speed steel with a coated finish, this bit delivers consistent performance in ferrous and non-ferrous materials. The 118-degree split point promotes accurate starting without a center punch and reduces walking on entry. With a 6 inch overall length and a maximum drilling depth of 3.0 inches, it suits a wide range of production and maintenance drilling tasks. Machinists, pipefitters, and general tradespeople working with drill presses or milling machines are the primary users of this bit.

This bit fits standard 1/2 inch Weldon-style tool holders and chucks commonly found on drill presses, knee mills, and portable magnetic drills. The reduced shank configuration allows a larger cutting diameter to be run in a standard 1/2 inch chuck without requiring a larger spindle. The three-flat Weldon shank prevents slippage under torque loads, making it a reliable choice in production environments, fabrication shops, and mechanical service settings where consistent hole sizing is critical.

Key Features

• 37/64 inch cutting diameter (0.5781 inch decimal) with a reduced 1/2 inch Weldon shank
• 118-degree split point for accurate entry and reduced thrust
• High speed steel construction for durability across a range of workpiece materials
• Coated finish for improved wear resistance and chip evacuation
• Three-flat Weldon shank resists rotation in the tool holder under heavy torque
• Regular spiral fluting with right-hand cut and 3.0 inch maximum drilling depth

Compatibility

Designed for use with 1/2 inch Weldon-style tool holders and drill chucks on drill presses, milling machines, and magnetic base drills that accept reduced shank drill bits in the T9FHD series.

Installation Notes

Installation and use of this bit should be performed by a qualified machinist or tradesperson familiar with rotating cutting tools. Secure the Weldon shank fully in the tool holder so all three flats engage the set screws before operation. Always power down and lock out the machine before changing bits or adjusting the tool holder. Do not exceed the recommended drilling depth of 3.0 inches, and use appropriate cutting fluid or coolant as required by the workpiece material and machine specifications.