Guhring 9007300043900 Stub Drill Bit 0.173in Carbide

Product Description

The GUHRING 9007300043900 is a stub-length (screw machine length) solid carbide 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 two-flute right-hand spiral configuration, and a straight-cylindrical shank. The micrograin solid carbide construction provides rigidity and wear resistance suited to tight-tolerance work. At 0.173 inches (wire size No. 17) in diameter, it fits standard drill chucks and collet holders without modification. The bright, uncoated finish is typical for general-purpose carbide tooling where coatings are unnecessary for the target workpiece material.

This drill bit is rated for general-purpose drilling with a primary application in aluminum and similar non-ferrous materials. The stub-length body limits deflection and improves hole location accuracy in short-depth applications. Maximum drilling depth is 0.686 inches, making it well suited for shallow through-holes and blind holes in production fixtures, sheet metal work, and component manufacturing. The 3xD flute-to-diameter ratio and web-thinned point reduce thrust force and chip packing. It is used by machinists, tool-and-die technicians, and maintenance mechanics on CNC machines, drill presses, and hand-held power tools.

Key Features

• Solid micrograin carbide construction for rigidity and extended tool life in non-ferrous materials
• 118-degree faceted point with web thinning reduces entry thrust and improves centering
• DIN 6539 stub-length geometry minimizes deflection in short-depth drilling applications
• Bright/uncoated finish appropriate for aluminum and general-purpose drilling
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• Right-hand cut, two-flute spiral design promotes efficient chip evacuation

Compatibility

Designed as a general-purpose stub-length carbide drill bit conforming to DIN 6539, compatible with standard straight-shank drill chucks and collet systems accepting a 4.39 mm shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with rotary cutting tools. Secure the shank fully in the chuck or collet before operation and verify runout with a dial indicator on precision work. Carbide is brittle — avoid side loading, interrupted cuts without proper setup, or dropping the tool. Observe all applicable machine guarding and PPE requirements per shop safety standards.