Triumph Twist Drill 012720 Jobber Length Drill Bit

Product Description

The TRIUMPH TWIST DRILL 012720 is a jobber-length drill bit engineered for heavy-duty metal drilling applications. Built from M7 high speed steel with a gold oxide finish, this bit handles alloy steel, carbon steel, and other ferrous materials with consistent performance. The 135-degree split point promotes self-centering entry and reduces walking on hard surfaces without a center punch. A web-thinned, tapered web configuration lowers thrust requirements and improves chip evacuation. At 4-7/8 inches overall length with a 3-1/2-inch flute, this bit fits standard drill chucks and magnetic drill setups commonly used by machinists, pipefitters, and ironworkers.

This bit is suited for production drilling and maintenance work in industrial and trade environments. The straight-cylindrical shank seats securely in keyed or keyless chucks across a wide range of corded drills, drill presses, and magnetic base drills. Its right-hand spiral flute geometry and regular spiral type make it a general-purpose workhorse for drilling through alloy steel, carbon steel, and similar structural metals in fabrication shops, mechanical rooms, and field service applications.

Key Features

• M7 high speed steel construction for heavy-duty drilling in ferrous metals
• 135-degree split point with self-centering geometry reduces bit walking
• Web-thinned tapered web lowers feed force and improves chip clearance
• Gold oxide finish provides mild lubricity and corrosion resistance during storage
• Straight-cylindrical shank fits standard drill chucks without modification
• Right-hand, regular spiral flute for efficient chip evacuation in through-hole drilling

Compatibility

Designed as an OEM-style replacement or direct-use jobber drill bit for standard three-jaw keyed and keyless drill chucks accepting straight-cylindrical shanks in the 0.350 to 0.400-inch size range.

Installation Notes

Installation and use of this bit should be performed by qualified machinists, maintenance technicians, or experienced tradespeople familiar with metalworking drill equipment. Secure the shank fully in the chuck and verify runout before drilling. Always power down and lock out the drill press or magnetic drill before changing bits. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and maintain dimensional accuracy.