Guhring 9007300031000 Solid Carbide Stub Drill Bit

Product Description

The GUHRING 9007300031000 is a solid carbide stub-length (screw machine length) drill bit designed for precision drilling in production and maintenance environments. Built to DIN 6539 standards, this bit features a 118-degree faceted point, a web-thinned tip for reduced thrust and improved centering, and a straight-cylindrical shank for standard chuck compatibility. At 0.122 inches (3.10 mm) in diameter with a micrograin carbide construction, it delivers tight hole tolerances to h8 and is suited for applications where dimensional accuracy matters. Licensed HVAC, plumbing, and electrical trades as well as machinists and tool-room technicians will find this bit appropriate for general-purpose drilling tasks.

This drill bit is optimized for drilling aluminum as its primary workpiece material, though the general-purpose grade carbide handles a range of non-ferrous and ferrous materials in typical shop and field conditions. The stub length format reduces overhang for improved rigidity in tight-clearance drilling situations. With a flute-to-diameter ratio of 3xD and a maximum drilling depth of 0.526 inches (13.35 mm), it is well matched to short, accurate holes in fixtures, panels, junction boxes, and mechanical assemblies. It is sold individually and ships in a quantity of one per package.

Key Features

• Solid micrograin carbide construction for extended tool life and dimensional stability
• 118-degree faceted point with web thinning for reduced thrust and self-centering entry
• Stub (screw machine) length for improved rigidity in confined or short-reach drilling
• Right-hand spiral flute geometry for efficient chip evacuation
• Straight-cylindrical shank fits standard drill chucks and collet holders
• Manufactured to DIN 6539 specification with h8 diameter tolerance

Compatibility

Designed as a general-purpose OEM-style stub drill bit suitable for use in standard drill chucks, CNC machining centers, and hand-held power tools accepting a 3.10 mm straight-cylindrical shank. No specific compatible model numbers were stated in the product data.

Installation Notes

Installation and use should follow standard machine shop or trade practices for carbide tooling. Secure the shank fully in the chuck or collet before operation and confirm runout is within acceptable limits, as carbide is brittle and sensitive to lateral shock. Do not use this bit in hammer-drill mode. When drilling metal panels or enclosures in electrical or mechanical applications, de-energize and lock out all circuits before drilling per applicable NEC or OSHA requirements.