Guhring 9005300066300 Jobber Drill Bit Letter G Firex

Product Description

The GUHRING 9005300066300 is a jobber length drill bit sized to Letter G (0.261 inches) and manufactured from powdered metal with a FIREX coating. Designed for high-performance drilling in steel and cast iron, it features a 130-degree drill point angle and a parabolic flute geometry that evacuates chips efficiently at higher feed rates. The straight-cylindrical shank and web-thinned point reduce entry force and improve centering. With an overall length of 3.98 inches and a flute length of 2.48 inches, this bit fits standard drill chucks and is suited for production machining, maintenance, and fabrication environments where tool life and hole quality matter.

This drill bit is intended for use in metalworking applications involving cast iron and steel workpieces, covering material codes K and P. Its parabolic flute with a fast spiral type makes it well suited for deep-hole and interrupted-cut scenarios common in job shop and production machining settings. The 5xD flute-to-diameter ratio supports drilling to a maximum depth of 2.089 inches without coolant-through requirements. Licensed machinists, tool-and-die technicians, and maintenance mechanics are the typical end users. The DIN 338 standard governs its dimensional specification.

Key Features

• FIREX coating improves wear resistance and reduces friction on steel and cast iron
• 130-degree drill point angle with cone relief for reduced thrust in harder workpiece materials
• Parabolic flute design with fast spiral promotes efficient chip evacuation at higher feeds
• Web-thinned point reduces entry force and improves self-centering
• Straight-cylindrical shank fits standard drill chucks without adapters
• Manufactured to DIN 338 specification with h8 diameter tolerance for consistent fit

Compatibility

Designed as an OEM-specification jobber length drill bit conforming to DIN 338, suitable for use in standard drill chucks accepting a 6.63 mm straight-cylindrical shank across a range of drill presses, CNC machining centers, and hand-held power tools configured for metalworking.

Installation Notes

This bit is installed by a machinist or maintenance technician into a compatible drill chuck or collet. Ensure the machine is fully powered down and locked out before changing tooling. Verify chuck capacity accommodates the 6.63 mm shank diameter before seating the bit. Do not exceed the rated maximum drilling depth of 2.089 inches per plunge without retracting to clear chips.