Triumph Twist Drill 011509 Cobalt Drill Bit 9/64 in

Product Description

The TRIUMPH TWIST DRILL 011509 is a cobalt jobber length drill bit designed for high-performance drilling in tough materials. Measuring 9/64 inch (0.1406 inch decimal) in diameter with an overall length of 2-7/8 inches and a flute length of 1-3/4 inches, this bit is built for heavy-duty work in alloy and alloy steel. The 135-degree split point promotes self-centering entry and reduces walking on hard surfaces. A gold oxide coating adds surface hardness and heat resistance. Right-hand spiral flutes evacuate chips efficiently during extended drilling runs. Licensed tradespeople and maintenance machinists reach for this bit when standard high-speed steel tooling falls short.

The 011509 is suited for drilling alloy steel and similar hard metals in fabrication, maintenance, and mechanical service environments. The straight-cylindrical shank accepts standard three-jaw chucks on drill presses, hand drills, and right-angle drill attachments. The Series T1C designation places this bit in a heavy-duty, high-performance tier appropriate for production and repetitive drilling tasks where bit longevity and hole accuracy matter. It ships individually and is sold in a minimum quantity of one unit.

Key Features

• Cobalt construction with gold oxide coating for extended tool life in hard metals
• 135-degree split point for self-centering entry on alloy and alloy steel workpieces
• Web-thinned, tapered web configuration reduces thrust and improves chip clearance
• Right-hand spiral flute with regular helix for reliable chip evacuation
• Straight-cylindrical shank fits standard three-jaw chucks without an adapter
• Series T1C heavy-duty grade rated for high-performance drilling applications

Compatibility

Designed as an OEM-style jobber length drill bit compatible with any standard three-jaw chuck or drill press accepting a straight-cylindrical shank in the 9/64 inch diameter range.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists, HVAC technicians, plumbers, or electricians familiar with rotating tool safety. Secure the workpiece firmly before drilling and confirm chuck jaws are fully tightened. Match spindle speed to the workpiece material and bit diameter per standard machining tables. Do not apply excessive lateral force, as cobalt bits are harder but more brittle than standard high-speed steel.