Guhring 9024640070300 Drill Bit Letter J Solid Carbide

Product Description

The GUHRING 9024640070300 is a jobber-length drill bit sized to Letter J (0.2770 inches) with an 118-degree faceted point and a FIREX-coated solid carbide construction. It is designed for general-purpose drilling in aluminum and other non-ferrous materials, operating at high cutting speeds where carbide grade K40 and the FIREX coating provide thermal and wear resistance. The straight-cylindrical shank seats securely in standard drill chucks. Two spiral flutes in a regular helix evacuate chips efficiently, and the web-thinned point reduces thrust and improves centering on entry. Installers and machinists in production and maintenance environments reach for this bit when tolerance and tool life matter.

This bit fits drilling applications in light-metal fabrication, HVAC sheet-metal work, and general mechanical assembly where a Letter J diameter is required. The 5xD flute-to-diameter ratio and 2.720-inch flute length support moderate-depth through-holes without pecking cycles in most setups. It is catalogued under Guhring Series 2464 and conforms to DIN specification standards, making it a direct match for shops sourcing to metric DIN tool standards.

Key Features

• Solid carbide K40 grade body with FIREX coating for extended wear life in non-ferrous materials
• 118-degree faceted point with web thinning reduces entry thrust and improves hole location accuracy
• Two regular-helix spiral flutes, 2.720 inches long, for efficient chip evacuation
• Straight-cylindrical shank at 7.03 mm diameter fits standard drill chucks and collets
• Maximum drilling depth of 2.302 inches (58.46 mm) within a 4.290-inch overall length
• DIN specification designation — suitable for shops with metric tool-standard requirements

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck or collet accepting a 7.03 mm straight-cylindrical shank. Primary workpiece material class is N (aluminum and non-ferrous metals) per Guhring Series 2464 classification.

Installation Notes

Installation and operation should be performed by a qualified machinist or tool-and-die technician familiar with carbide tooling. Carbide bits are brittle — avoid lateral loading, interrupted cuts without proper feed support, and hard impacts that can chip the cutting edge. Confirm chuck or collet runout is within acceptable limits before use, as excessive runout accelerates edge wear and reduces hole tolerance. Power down and lock out the machine spindle completely before changing or inspecting the bit.