Precision Twist Drill 5995508 Jobber Drill Bit 5/64 Hss

Product Description

The PRECISION TWIST DRILL 5995508 is a jobber-length drill bit designed for general-purpose drilling in metal and 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. It measures 2 inches overall length with a 1-inch flute length and a straight shank diameter of 0.0781 inches (5/64 inch). The web-thinned, tapered web construction reduces entry force and improves chip evacuation. Machinists and metalworking tradespeople use this bit for precision drilling where a left-hand cut is required.

This drill bit is suited for drilling in steel and cast iron, making it appropriate for machine shops, maintenance facilities, and metal fabrication environments. The left-hand cutting direction is particularly useful when extracting broken fasteners, as the bit can engage and back out a damaged screw or bolt while drilling. It conforms to ANSI standards and falls within the Series L10 product line. The 5/64-inch diameter positions it for small-diameter, close-tolerance work where bit accuracy is critical.

Key Features

• Left-hand cutting direction for reverse-rotation drilling and fastener extraction applications
• 118-degree standard point angle for general-purpose entry in steel and cast iron
• HSS construction with bright, uncoated finish for clean chip flow
• Web-thinned, tapered web reduces thrust force at the cutting edge
• Regular spiral flute with 2 flutes for efficient chip removal
• Meets ANSI standards, Series L10

Compatibility

Designed as a general-purpose jobber-length drill bit suitable for use in standard drill chucks and machining setups handling steel and cast iron workpieces.

Installation Notes

This bit is installed by a machinist or qualified metalworking technician in a drill press, lathe tailstock, or hand drill rated for left-hand rotation. Secure the straight shank firmly in the chuck before operating. Power down and de-energize all equipment before changing tooling. Maximum drilling depth is 1 inch; do not force the bit beyond its rated depth or use it on materials outside its intended application.