Triumph Twist Drill 090549 Drill Bit Set 21pc Hss

Product Description

The TRIUMPH TWIST DRILL 090549 is a 21-piece maintenance length drill bit set engineered for metalworking and general-purpose drilling applications. Built from high-speed steel (HSS) with a black oxide and bronze oxide finish, each bit delivers heat resistance and extended service life in demanding shop and field environments. The 135-degree split point geometry reduces walking and enables faster penetration without a center punch. Sizes range from 1/16 inch to 3/8 inch in 1/64-inch step increments, covering the most common fastener and clearance hole requirements. Licensed HVAC techs, plumbers, electricians, and maintenance professionals keep a set like this on the truck for daily fabrication and repair work.

This set is suited for residential and commercial maintenance environments where a compact, consistent range of drill sizes is needed on demand. The round shank with three flats prevents bit slippage in standard three-jaw chucks. Each bit is maintenance length, meaning it is shorter than jobber length for improved rigidity and control in tight-access drilling situations. The metal storage case keeps bits organized and protected between uses. The T180C series designation indicates this is a production-quality line intended for heavy-duty, repetitive drilling tasks in metal, wood, and multipurpose materials.

Key Features

• High-speed steel construction with black oxide and bronze oxide dual coating for heat and wear resistance
• 135-degree split point reduces drill walking and lowers feed force required at entry
• Maintenance length profile increases rigidity and improves accuracy in confined spaces
• Round shank with three flats prevents rotation and slippage in standard chuck jaws
• 21-piece set spans 1/16 inch to 3/8 inch in 1/64-inch increments for broad coverage
• Metal storage case included for organized, protected storage on the job site

Compatibility

Designed for use with standard three-jaw drill chucks accepting round straight shanks; suitable for metalworking and multipurpose drilling applications in hand drills, drill presses, and portable power tools.

Installation Notes

Ensure the drill chuck is fully tightened against the three-flat shank before operation to prevent slippage. Use appropriate cutting fluid when drilling ferrous metals to extend bit life and reduce heat buildup. Secure the workpiece firmly before drilling to prevent movement. Replace any bit that shows signs of chipping, excessive wear, or discoloration from overheating.