Triumph Twist Drill 012638 Wire 38 Drill Bit Hss

Product Description

The TRIUMPH TWIST DRILL 012638 is a jobber-length drill bit designed for high-performance drilling in metal and wood applications. Built from M7 high speed steel with a gold oxide coating, it carries a wire gauge size of 38, equal to 0.1015 inches in decimal, and a 135-degree split-point tip that starts cutting on contact without a center punch. The web-thinned, tapered web construction reduces thrust and improves chip evacuation. Right-hand spiral fluting pulls chips away from the cut. At 2.5 inches overall length with a 1.4375-inch flute, this bit fits standard drill chucks and is suited for production and maintenance use alike.

This bit is intended for drilling alloy steel, carbon steel, and wood in residential and commercial maintenance, fabrication, and production environments. The straight-cylindrical shank seats securely in keyed or keyless chucks. The T2HD series is classified as a heavy-duty, high-performance jobber bit, making it appropriate for repetitive drilling cycles where tool life and hole accuracy matter. Licensed electricians, pipefitters, millwrights, and general maintenance technicians are the typical end users for wire gauge bits in this size range.

Key Features

• Wire size 38 (0.1015 inches) straight-cylindrical shank seats in standard drill chucks
• 135-degree split-point tip is self-centering and reduces walk on hard surfaces
• M7 high speed steel construction for extended tool life in steel and alloy applications
• Gold oxide finish reduces friction and provides light corrosion resistance
• Web-thinned tapered web lowers drilling thrust and improves chip flow
• Right-hand regular spiral flute for efficient chip evacuation

Compatibility

Designed for use in alloy steel, carbon steel, and wood workpieces. Fits any standard drill chuck accepting a 0.1015-inch straight-cylindrical shank. Part of the TRIUMPH TWIST DRILL T2HD heavy-duty jobber series.

Installation Notes

Install in a properly rated drill press, hand drill, or CNC spindle before applying power. Confirm chuck jaws are fully tightened and the shank is fully seated before beginning a drilling cycle. Use appropriate cutting fluid when drilling hardened or stainless alloys to extend bit life and maintain hole tolerance. Dispose of worn bits in accordance with local shop waste guidelines, as HSS tooling may have sharp edges even when dull.