Triumph Twist Drill 094144 Reduced Shank Drill Bit

Product Description

The TRIUMPH TWIST DRILL 094144 is a reduced shank twist drill bit designed for drilling operations that require a 1/2 inch Weldon shank in a standard drill chuck or milling-style holder. The bit cuts an 11/16 inch (0.6875 inch) diameter hole using high speed steel construction with a coated finish for improved wear resistance. It features a 118-degree split point for fast, accurate starting without a center punch. Overall length is 6 inches with a 3 inch flute length. This bit is suited for metalworking, fabrication, and maintenance applications where a reduced shank allows a larger diameter cutter to run in a smaller-capacity holder.

This bit fits the Series T9FHD product family and is built for right-hand, spiral-flute cutting in a wide range of materials. It is well suited for production drilling in steel, cast iron, and similar metals in machine shop, field fabrication, and industrial maintenance settings. The Weldon shank with three flats resists rotation and slippage under load, making it appropriate for use in drill presses, milling machines, and magnetic drill setups where torque transmission is critical.

Key Features

• 11/16 inch (0.6875 inch) cut diameter with 1/2 inch reduced Weldon shank - three flats prevent rotation
• 118-degree split point for self-centering starts and reduced thrust requirements
• High speed steel construction handles a broad range of metals and general-purpose drilling
• Coated finish improves surface hardness and heat resistance compared to bright finish
• 6 inch overall length with 3 inch flute length and 3 inch maximum drilling depth
• Right-hand cut, regular spiral flute - compatible with standard spindle rotation

Compatibility

Designed as an OEM-style replacement or direct-use reduced shank drill bit for holders and chucks accepting a 1/2 inch Weldon shank. Suitable for drill presses, milling machines, and magnetic drills configured for that shank size.

Installation Notes

This bit is installed by a machinist or qualified tradesperson into a compatible 1/2 inch Weldon shank holder or end mill adapter. Secure all three flats against the set screws and verify torque on the holder before operation. Ensure the spindle is fully stopped and de-energized before changing bits. Do not exceed the recommended drilling depth of 3 inches per pass to avoid chip packing and overheating.