Guhring 9007300067500 Carbide Stub Drill Bit 0.2657 in

Product Description

The GUHRING 9007300067500 is a solid carbide screw machine length (stub) drill bit designed for precise, high-performance hole-making in metalworking and machining applications. Built to DIN 6539 standards, this Series 730 bit measures 0.2657 inches (17/64 inch, Letter H) in diameter with a 118-degree faceted point angle and a web-thinned geometry for reduced thrust at entry. The micrograin carbide construction delivers rigidity and edge retention that high-speed steel cannot match in demanding materials. Qualified machinists and tool-and-die technicians are the primary users. The straight-cylindrical shank seats directly into standard drill chucks or collet holders without adapters.

This bit is rated for general-purpose drilling with aluminum listed as the primary workpiece material, though its micrograin carbide grade and DIN 6539 specification make it well-suited for non-ferrous metals and other materials where dimensional accuracy and surface finish matter. The stub-length body limits deflection in short-reach setups such as CNC machining centers, drill presses, and turret lathes. Maximum drilling depth is 0.94 inches. The 3xD flute-to-diameter ratio keeps chips moving efficiently in shallow-to-moderate depth holes without recutting. This is a single-piece, individually packaged bit sold in a minimum quantity of one.

Key Features

• Solid micrograin carbide construction for edge retention and dimensional accuracy
• 118-degree faceted point with web thinning to reduce entry thrust and walking
• Stub length body minimizes deflection in short-reach and CNC setups
• Right-hand cut, 2-flute spiral design sized to DIN 6539 specification
• Bright/uncoated finish — compatible with cutting fluid application
• Diameter tolerance h8 for consistent fit in close-tolerance work

Compatibility

Designed as a general-purpose OEM-style stub drill bit compatible with standard straight-cylindrical shank drill chucks and collet systems accepting a 6.75 mm shank diameter.

Installation Notes

Installation and use of carbide drill bits should be performed by qualified machinists familiar with speeds, feeds, and workholding for carbide tooling. Always secure the workpiece fully before drilling and confirm spindle runout is within acceptable limits — carbide is brittle and sensitive to lateral loading. Power down and lock out the machine before inserting or removing the bit from the chuck or collet. Do not use carbide stub drills for interrupted cuts or in setups with excessive overhang without verifying the application is appropriate for this geometry.