Guhring 9005300110000 Jobber Drill Bit 0.4331 in Pm Firex

Product Description

The GUHRING 9005300110000 is a jobber-length twist drill bit engineered for high-performance drilling in ferrous materials. Built from PM-ASP-60 powdered metal (high-speed steel), it carries a FIREX coating for improved heat resistance and extended tool life at elevated cutting speeds. The drill measures 0.4331 inches in diameter with a 130-degree split-point cone relief tip, a parabolic flute geometry, and an overall length of 5-19/32 inches. The parabolic flute profile promotes efficient chip evacuation, reducing built-up edge and heat in demanding applications. This is a professional-grade cutting tool intended for use by machinists, millwrights, and maintenance technicians in production and MRO environments.

The 9005300110000 is designed for drilling cast iron and steel workpieces, including both mild and alloy steel grades. The 130-degree point angle and web-thinned, tapered web configuration make it well-suited for initiating holes without a center punch in most shop setups. The straight-cylindrical shank fits standard three-jaw drill chucks and collet systems. With a flute-to-diameter ratio of 5xD and a maximum drilling depth of 3.051 inches, it handles through-holes and deep spot drilling across a wide range of fixtures and machine tools, including drill presses, CNC machining centers, and hand-held power drills used in structural and maintenance work.

Key Features

• PM-ASP-60 powdered metal construction for superior hardness and wear resistance compared to standard HSS
• FIREX coating provides thermal barrier and reduced friction at the cutting edge
• 130-degree cone relief point with web thinning reduces thrust force and improves centering
• Parabolic flute geometry accelerates chip removal in deep-hole and interrupted-cut applications
• Straight-cylindrical shank compatible with standard chucks and collets
• Conforms to DIN 338 specification for consistent dimensional tolerances

Compatibility

Designed for use in cast iron and steel workpieces per DIN 338 Series 530 standards. Primary workpiece material codes K and P cover gray cast iron and carbon and alloy steels. Compatible with any machine tool or hand-held drill accepting a 0.4331-inch straight-cylindrical shank.

Installation Notes

This drill bit is installed by machinists and maintenance technicians in standard three-jaw chucks or collet holders rated for the shank diameter. Ensure the machine spindle is fully stopped and the chuck is securely tightened before beginning any operation. Use appropriate cutting fluid or coolant when drilling steel to manage heat, as this bit does not feature through-coolant capability. Inspect the cutting edges for chipping or wear before each use and replace if the FIREX coating is worn through at the tip.