Guhring 9024630065300 Carbide Stub Drill Bit 0.257in

Product Description

The GUHRING 9024630065300 is a solid carbide screw machine length (stub) drill bit engineered for precision drilling in demanding shop and production environments. It measures 0.257 inches (Letter size F) in diameter with a 118-degree faceted point and a web-thinned tip geometry that reduces entry force and improves chip evacuation. The two-flute regular spiral design delivers clean, consistent holes in a variety of materials. At 2.756 inches overall length with a 1.22-inch flute length, this compact stub-length bit offers added rigidity compared to jobber-length tooling, making it well-suited for CNC machining centers, drill presses, and screw machine operations.

This bit is optimized for drilling aluminum as its primary workpiece material and performs as a general-purpose tool across short-depth applications. The straight-cylindrical shank measures 6.53 mm in diameter, fitting standard drill chucks and collet holders without modification. Maximum recommended drilling depth is 0.835 inches. Its stub length and rigid carbide substrate make it a practical choice for machinists, tool-and-die shops, and production floor applications where hole location accuracy and tool life are priorities.

Key Features

• Solid carbide construction (K40 material grade) for extended tool life in non-ferrous and general-purpose drilling
• 118-degree faceted drill point with web-thinned geometry reduces thrust force and improves centering accuracy
• Stub length (screw machine length) provides greater rigidity and reduced deflection versus jobber-length bits
• Two-flute regular spiral design promotes efficient chip evacuation in through and blind holes
• Coated finish for improved wear resistance and lubricity during cutting
• Conforms to DIN 6539 standard, Series 2463

Compatibility

Designed as a direct-fit replacement or standard tooling selection for applications requiring a 0.257-inch (Letter F) drill diameter within the 0.2500 to 0.3000 inch drill bit size range. Straight-cylindrical shank is compatible with standard drill chucks and collet systems accepting a 6.53 mm shank diameter.

Installation Notes

Installation and tool changes should be performed with the machine fully powered down and spindle locked. Verify chuck or collet runout before seating the shank to maintain hole-location tolerances. Carbide tooling is brittle and should not be used in hand-held drills or applications with significant side loading. Follow shop-specific feeds and speeds for the workpiece material; excessive feed rate is the leading cause of carbide tip fracture.