Precision Twist Drill 5995504 5/32 in Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5995504 is a jobber-length drill bit designed for left-hand cutting in steel and cast iron applications. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, it features a 118-degree standard point angle and a regular spiral flute configuration. The bit measures 3.125 inches overall length with a 2-inch flute length, providing a 13xD flute-to-diameter ratio suited for through-hole and moderate-depth drilling. Web thinning reduces cutting force at the tip entry point. This is a general-purpose bit installed by machinists, maintenance technicians, and trade professionals working with ferrous and non-ferrous base materials.

This bit is built for drilling steel and cast iron in general-purpose production and maintenance environments. The left-hand cutting direction makes it particularly useful when removing broken fasteners or reverse-drilling applications where conventional right-hand bits are not effective. The straight shank fits standard drill chucks without adapters. The Series L10 designation places this within a consistent family of jobber-length HSS bits conforming to ANSI standards.

Key Features

• Left-hand cut direction for reverse-drilling and broken fastener extraction
• 118-degree standard point angle with web-thinned tip for reduced entry force
• HSS construction with bright, uncoated finish suitable for general ferrous and non-ferrous materials
• Regular spiral flute with tapered web configuration for chip evacuation
• Straight shank compatible with standard drill chucks
• Conforms to ANSI standards, Series L10

Compatibility

Designed as a general-purpose jobber-length drill bit for use in steel and cast iron workpieces; compatible with any standard drill chuck accepting a straight shank at 0.1563 inches shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with metalworking drilling operations. Secure the workpiece firmly before drilling and verify chuck grip on the straight shank before operation. For left-hand drilling applications involving broken fastener removal, ensure the drill press or hand drill is set to reverse rotation before engaging the bit. Inspect the bit for wear or tip damage before each use and replace when cutting efficiency degrades.