Precision Twist Drill 5995464 1/8 Inch Hss Drill Bit

Product Description

The PRECISION TWIST DRILL 5995464 is a jobber-length drill bit designed for general-purpose drilling in steel, cast iron, and similar ferrous and non-ferrous materials. Built from high-speed steel (HSS) with a bright uncoated finish, this bit features a 118-degree standard point angle and a left-hand cutting direction, making it well suited for applications where reverse-rotation extraction or left-hand drilling is required. The straight shank measures 1/8 inch in diameter, and the overall length is 2.75 inches, with a flute length of 1.625 inches. A tapered web and web-thinned geometry help reduce thrust during entry and improve chip evacuation in typical drilling operations.

This bit is appropriate for use in residential, commercial, and light industrial settings. It is commonly used by HVAC technicians, plumbers, electricians, and general maintenance professionals when drilling pilot holes or extracting broken fasteners in steel and cast iron components. The left-hand cut is especially useful when paired with a reverse-rotation drill to back out stripped or broken screws and bolts without additional extraction tooling. The Series L10 designation places this bit within a general-purpose jobber-length family intended for standard drill press or hand-drill applications.

Key Features

• Left-hand cutting direction for reverse-rotation drilling and broken fastener extraction
• 118-degree standard point angle for general-purpose entry in steel and cast iron
• HSS construction with bright uncoated finish for consistent performance across common workpiece materials
• Tapered web with web-thinned geometry reduces drilling thrust and improves chip flow
• 2-flute regular spiral configuration with a 13xD flute-to-diameter ratio
• Straight shank fits standard drill chucks without adapters

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with standard 3-jaw drill chucks accepting a 1/8-inch straight shank. Primary workpiece materials include steel and cast iron; the bit also accommodates non-ferrous and some non-metallic materials per material codes P, M, K, N, and S. Meets ANSI standards.

Installation Notes

Secure the straight shank firmly in a properly sized drill chuck before operation. Use appropriate RPM settings for the workpiece material and bit diameter — smaller diameter bits generally require higher speeds to prevent deflection or breakage. Left-hand bits are typically run in reverse rotation; confirm drill direction before drilling. Eye protection and appropriate work-holding are required any time rotary cutting tools are in use.