Triumph Twist Drill 011205 Drill Bit 5/64 in Hss

Product Description

The TRIUMPH TWIST DRILL 011205 is a 5/64 inch (0.0781 inch decimal) high speed steel mechanics drill bit designed for general-purpose drilling in metal and hard materials. Built to Series T1B jobber-length standards, it features a straight-cylindrical shank, a 118-degree standard point angle, and a right-hand spiral flute with web thinning for cleaner entry and reduced walking at the start of a cut. The oxide finish provides a degree of lubricity and corrosion resistance during use. At 2 inches overall length with a 1 inch flute length, this bit fits standard drill chucks and is suited for bench drill presses, hand drills, and drill motors used in shop or field environments.

This bit is intended for drilling cast iron, stainless steel, and general steel stock. It is a jobber-length format, making it the standard reach choice for most through-hole and blind-hole applications in fabrication, maintenance, and repair work. Machinists, pipefitters, millwrights, and general maintenance technicians commonly keep this size on hand for small-diameter work in ferrous materials. The tapered web configuration supports chip evacuation in deeper holes.

Key Features

• 5/64 inch diameter (0.0781 inch decimal) straight-cylindrical shank for standard chuck compatibility
• 118-degree standard point angle with web-thinned, tapered web for reduced entry force
• High speed steel construction rated for cast iron, stainless steel, and carbon steel
• Oxide finish for surface lubricity and light corrosion resistance
• Jobber length: 2 inches overall length, 1 inch flute length
• Right-hand cut with regular spiral flute for efficient chip removal

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with standard 3-jaw chucks and keyed drill chucks accepting straight-cylindrical shanks up to 5/64 inch diameter. Rated for use in cast iron, stainless steel, and steel workpieces.

Installation Notes

Install in a properly sized drill chuck and tighten securely before use. Ensure the workpiece is clamped or fixtured to prevent rotation. Use appropriate cutting fluid or coolant when drilling stainless steel to extend tool life and reduce work hardening. Replace the bit if the cutting edges show signs of glazing, chipping, or burnishing rather than cutting.