Precision Twist Drill 5995469 15/32 Inch Hss Drill Bit

Product Description

The PRECISION TWIST DRILL 5995469 is a jobber-length drill bit designed for general-purpose drilling in steel, cast iron, and similar 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 removing broken fasteners and drilling in reverse-rotation applications. The bit measures 15/32 inch (0.4688 inch) in diameter with an overall length of 5.75 inches and a flute length of 4.3125 inches. It conforms to ANSI standards and belongs to the Series L10 product line. Installation requires no coolant-through capability, keeping setup straightforward for standard drill press or hand-drill use.

This bit is intended for trade and industrial applications where left-hand cut geometry is required — most commonly when extracting broken studs, bolts, or taps from ferrous workpieces. Primary workpiece materials include steel and cast iron. The straight shank fits standard chucks without adapters. At a 9xD flute-to-diameter ratio, this jobber-length format provides adequate chip clearance for moderate-depth holes. Machinists, maintenance technicians, and metalworking trades are the primary users of this bit configuration.

Key Features

• Left-hand cutting direction — optimized for broken fastener extraction and reverse-rotation drilling
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust on entry
• High-speed steel (HSS) construction for durability in steel and cast iron
• Bright, uncoated finish — ready for use as delivered, compatible with cutting fluid application
• Regular spiral flute with 9xD ratio for efficient chip evacuation
• ANSI-compliant Series L10 jobber-length geometry with straight shank

Compatibility

Designed as a general-purpose jobber-length replacement or working bit for applications involving steel and cast iron workpieces, rated for material codes P, M, K, N, and S per standard classification. Fits any standard drill chuck accepting a 15/32 inch (0.4688 inch) straight shank.

Installation Notes

This bit is installed by a machinist or maintenance technician using a standard keyed or keyless drill chuck on a drill press, hand drill, or reversible power tool. Secure the straight shank firmly before operation and confirm the tool is set to reverse rotation to take advantage of the left-hand cut geometry. Apply appropriate cutting fluid for extended tool life when drilling ferrous materials. Inspect the point and flutes for wear before each use and replace the bit if chipping or dulling is observed.