Walter-titex 5059330 Letter H Hss Jobber Drill Bit

Product Description

The WALTER-TITEX 5059330 is a Letter H jobber-length drill bit designed for high-performance drilling in a wide range of ferrous and non-ferrous materials. Built from high speed steel with an oxide coating, this bit measures 0.2660 inches in diameter and features a 130-degree point angle for aggressive, self-centering entry with reduced thrust. The parabolic flute geometry promotes fast chip evacuation, making it well-suited for deeper holes where chip packing is a concern. With an overall length of 4-9/32 inches and a straight-cylindrical shank, it mounts directly in standard drill chucks and CNC tool holders. The web-thinned, tapered web design further reduces cutting force at the tip. This bit is a go-to choice for machinists, pipefitters, and maintenance technicians who need consistent, reliable performance across production and repair drilling tasks.

The 5059330 is appropriate for jobsite and shop use wherever a Letter H diameter hole is required. Common applications include clearance holes for fasteners, pilot drilling before reaming, and general-purpose hole-making in steel, cast iron, aluminum, and similar materials. The high-performance grade designation and parabolic flute make it suitable for both hand-held power drill and drill press use, as well as light-duty CNC drilling operations. The oxide finish provides a baseline level of lubricity and corrosion resistance during storage and initial cuts.

Key Features

• Letter H diameter at 0.2660 inches for precise fractional and letter-size applications
• 130-degree point angle reduces thrust and improves self-centering on entry
• Parabolic flute geometry accelerates chip evacuation in deeper holes
• Web-thinned tapered web lowers cutting resistance at the drill tip
• Oxide coating provides lubricity and protects against surface corrosion
• Straight-cylindrical shank fits standard 3-jaw chucks and collet holders without modification

Compatibility

Designed as an OEM-style replacement and standard jobber drill for any application requiring a Letter H diameter hole. Fits all drill presses, hand-held power drills, and CNC machining centers equipped with a chuck or collet accepting a 0.2660-inch straight shank. Conforms to BS and DIN specification designations.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with rotary cutting tools. Always secure the workpiece and ensure the drill chuck is fully tightened before operation. Inspect the cutting edges and web for wear or chipping before each use, and replace the bit if the point is damaged to avoid workpiece damage or bit breakage. Follow applicable shop safety standards and use appropriate cutting fluid or lubricant for the material being drilled.