Triumph Twist Drill 044424 Screw Machine Drill Bit 3/8 in

Product Description

The TRIUMPH TWIST DRILL 044424 is a screw machine length (stub length) drill bit designed for high-production drilling in metal fabrication, machining, and maintenance applications. Built from high-speed steel with an oxide finish, it features a 135-degree split point that reduces walking on contact and lowers the thrust required to start a hole. The straight-cylindrical shank seats securely in standard drill chucks and quick-change holders. At 3.125 inches overall length, this stub-length geometry provides added rigidity compared to jobber-length bits, making it well suited for short-hole drilling in tight clearances or on drill presses.

This bit is used in metalworking environments where hole accuracy and reduced bit deflection matter - machine shops, fabrication floors, HVAC sheet metal work, and general maintenance. The 3/8 inch diameter and Series T4 construction are common in production drilling setups. The web-thinned, tapered web configuration reduces cutting resistance and heat buildup at the tip. Right-hand cutting direction is standard for conventional drill press and hand drill operation. Sold individually.

Key Features

• 135-degree split point reduces center-walking and lowers entry thrust
• Web-thinned tapered web decreases cutting resistance and tip heat
• High-speed steel construction handles steel, cast iron, and most non-ferrous metals
• Oxide coating provides mild corrosion resistance and lubricity during cutting
• Stub (screw machine) length adds rigidity and reduces deflection versus jobber-length bits
• Straight-cylindrical shank fits standard 3-jaw chucks and quick-change holders

Compatibility

Designed as a standard replacement or production-use screw machine length drill bit for use in drill presses, CNC drilling operations, and hand drills equipped with a 3/8 inch or larger chuck capacity.

Installation Notes

Installation and use should follow standard machining safety practices. Secure the workpiece fully before drilling and ensure the shank is seated and tightened in the chuck before operation. Wear appropriate eye protection and follow applicable OSHA and shop safety guidelines. Do not exceed the recommended cutting speed for the material being drilled, and apply cutting fluid when drilling ferrous metals to extend tool life.