Guhring 9024580063500 Cobalt Drill Bit Letter E 1/4 in

Product Description

The GUHRING 9024580063500 is a cobalt jobber length drill bit sized Letter E (0.2500 inches) with a 130-degree cone relief point and FIREX coating. It is built for high-performance drilling in demanding materials, particularly titanium alloys and other hard-to-machine metals classified under ISO material group M and S. The FIREX coating reduces friction and heat buildup at the cutting edge, extending tool life in production environments. With a straight-cylindrical shank and web-thinned geometry, this bit is designed for self-centering entry and efficient chip evacuation through its two spiral flutes. It is a direct fit for standard drill chucks used in machining and fabrication applications.

This drill bit is suited for professional machinists, tool-and-die makers, and metalworking tradespeople working with titanium alloys, stainless steels, and other high-strength materials. Its 5xD flute-to-diameter ratio and regular spiral type make it appropriate for both manual drill press setups and CNC applications where consistent hole diameter tolerance is required. The DIN 338 standard construction ensures dimensional conformity for repeatable results in production drilling operations.

Key Features

• Cobalt construction with FIREX coating for extended tool life in hard-metal applications
• 130-degree cone relief point with web-thinned geometry for self-centering entry
• Two spiral flutes with 5xD ratio for effective chip removal at depth
• Straight-cylindrical shank with h8 diameter tolerance for precise chuck fit
• Rated for titanium alloy and ISO M and S workpiece materials
• Conforms to DIN 338 standard; Series 2458 high-performance designation

Compatibility

Designed for use with standard straight-shank drill chucks accepting a 0.2500-inch (6.35 mm) shank. Intended for drilling titanium alloys and other ISO M and S material group workpieces. Part of GUHRING Series 2458.

Installation Notes

Installation and use should be performed by a qualified machinist or metalworking professional. Ensure the drill press, lathe, or CNC spindle is fully powered down and locked out before changing tooling. Secure the straight-cylindrical shank firmly in the chuck to the full shank engagement depth before operation. Do not exceed the maximum drilling depth of 2.106 inches (53.48 mm) in a single pass without pecking to clear chips and prevent tool binding.