Guhring 9007300028700 Stub Drill Bit 0.113 in Carbide

Product Description

The GUHRING 9007300028700 is a solid carbide screw machine length (stub) drill bit designed for precision drilling in metalworking and industrial applications. Built to DIN 6539 standards, this Series 730 bit features a 118-degree faceted point angle and a web-thinned tip for reduced thrust and cleaner entry. The micrograin carbide construction delivers hardness and wear resistance beyond high-speed steel, making it well suited for tight-tolerance work. At 0.113 inches (wire gauge size 33) in diameter, it handles holes up to 0.461 inches deep. Licensed HVAC, plumbing, and industrial trades install this type of bit where short, rigid drilling geometry is required.

This bit is intended for general-purpose drilling, with aluminum listed as the primary workpiece material. The stub length body limits deflection in tight spaces or on short-travel drill presses and CNC machining centers. The straight-cylindrical shank at 2.87 mm diameter seats directly in standard collets and chucks. Right-hand spiral flutes evacuate chips efficiently during through-hole and blind-hole operations. It is sold individually (quantity of one per package).

Key Features

• Solid micrograin carbide construction for extended tool life in abrasive and non-ferrous materials
• 118-degree faceted point angle with web thinning for reduced entry thrust
• Stub (screw machine) length body minimizes deflection and maximizes rigidity
• Bright/uncoated finish compatible with a wide range of cutting fluids
• Right-hand cut, 2-flute spiral design for efficient chip evacuation
• Manufactured to DIN 6539 with h8 diameter tolerance for consistent fitment

Compatibility

Designed as a general-purpose stub-length carbide drill bit conforming to DIN 6539, suitable for use in standard drill chucks and collet systems accepting a straight-cylindrical shank of 2.87 mm diameter.

Installation Notes

This bit is installed by machinists and tool and die technicians in drill presses, CNC machining centers, and hand-held power tools with compatible chuck or collet systems. Ensure the spindle is fully stopped and the tool is securely seated in the chuck or collet before operation. Use cutting fluid or coolant appropriate for the workpiece material to preserve edge life. Do not exceed the recommended maximum drilling depth of 0.461 inches per pass without retracting to clear chips.