Triumph Twist Drill 011218 Drill Bit 9/32 Inch Hss

Product Description

The TRIUMPH TWIST DRILL 011218 is a 9/32 inch (0.2812 inch decimal) high speed steel mechanics drill bit designed for general-purpose drilling in metal fabrication, maintenance, and mechanical service applications. Built to Series T1B jobber-length specifications, it features a 118-degree standard point angle, spiral flutes, and a right-hand cut. The oxide finish provides light corrosion resistance and reduces friction during drilling. At 4.25 inches overall length with a 2.9375-inch flute length, this bit fits standard drill chucks and magnetic drill press setups used by mechanics, millwrights, and metalworking tradespeople.

This bit is suited for drilling cast iron, stainless steel, and mild steel in both shop and field environments. The straight-cylindrical shank is compatible with standard 3-jaw drill chucks across corded and cordless platforms. Jobber-length geometry balances reach and rigidity for through-hole drilling in plate, structural steel, and fabricated assemblies. The web-thinned, tapered web construction reduces thrust required at the cutting edge, making it practical for hand-drill and drill-press use on harder ferrous materials.

Key Features

• 9/32 inch diameter with 0.2812 inch decimal equivalent for precise hole sizing
• 118-degree standard point angle optimized for general-purpose ferrous metal drilling
• High speed steel construction withstands heat generated in steel and cast iron applications
• Web-thinned, tapered web reduces drilling thrust and improves chip ejection
• Oxide finish lowers surface friction and adds light corrosion protection
• Right-hand spiral flutes in jobber-length format for balanced reach and rigidity

Compatibility

Designed as an OEM-style jobber-length replacement drill bit for use with standard 3-jaw chucks in drill presses, hand drills, and magnetic drills. Rated for primary workpiece materials including cast iron, stainless steel, and steel.

Installation Notes

Install and remove drill bits only with the drill powered off and the chuck key fully withdrawn before operation. Secure the workpiece with appropriate clamps or a vise before drilling to prevent rotation and injury. Use cutting fluid or coolant when drilling stainless steel or harder alloys to extend bit life. Inspect the cutting edges for wear before each use and replace if the point shows chipping or significant dulling.