Guhring 9005300062500 Jobber Drill Bit Letter D Firex

Product Description

The GUHRING 9005300062500 is a jobber length drill bit sized to Letter D (0.2461 inches) and built for high-performance drilling in demanding materials. Manufactured from powdered metal and finished with a FIREX coating, this bit is engineered to handle cast iron and steel with extended tool life. The 130-degree point angle with cone relief and web-thinned geometry reduce entry force and improve chip evacuation. With a parabolic, fast-spiral flute design and an overall length of 3.98 inches (101 mm), this bit is a reliable choice for machinists and maintenance technicians running production or repair work on metal components.

This drill bit is suited for metalworking applications in both shop and field environments where cast iron and steel are the primary workpiece materials. The straight-cylindrical shank with a 6.25 mm diameter seats securely in standard drill chucks, making it compatible with benchtop drill presses, magnetic drills, and hand-held power tools. The 5xD flute-by-diameter ratio and parabolic flute geometry support efficient chip clearing in deeper holes, up to a maximum drilling depth of 2.111 inches (53.63 mm). Series 530 construction conforms to DIN 338 standards, which are widely recognized in precision metalworking trades.

Key Features

• Letter D size - 0.2461 inch diameter with h8 tolerance for accurate hole sizing
• FIREX coating extends tool life in abrasive cast iron and steel applications
• 130-degree cone relief point with web thinning reduces entry force and walking
• Parabolic fast-spiral flute promotes rapid chip evacuation in deep-hole drilling
• Straight-cylindrical shank fits standard drill chucks without adapters
• Conforms to DIN 338 specification for consistent jobber length geometry

Compatibility

Designed as an OEM-style jobber length drill bit compatible with standard drill chucks accepting a 6.25 mm straight-cylindrical shank, suitable for drilling cast iron and steel workpieces in accordance with DIN 338 standards.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trade technicians familiar with metalworking equipment. Always secure the workpiece and confirm chuck engagement before operation. Power down the drill completely before changing bits. Do not exceed the recommended maximum drilling depth of 2.111 inches to avoid bit deflection or breakage.