Guhring 9007300025300 Carbide Stub Drill Bit 0.0995in

Product Description

The GUHRING 9007300025300 is a solid carbide stub-length (screw machine length) drill bit designed for precision drilling in metalworking and light industrial applications. Built to DIN 6539 standards, this bit features a 118-degree faceted point angle and a web-thinned tip geometry that reduces entry force and improves centering accuracy. The micrograin carbide construction delivers superior hardness and wear resistance compared to high-speed steel alternatives. With a straight-cylindrical shank and right-hand spiral flute, it is suited for use in CNC machining centers, drill presses, and handheld power tools where tight tolerances are required. Licensed machinists and tool-and-die professionals are the primary installers.

This drill bit is rated for general-purpose drilling with a primary workpiece material designation of aluminum, though the micrograin carbide grade and DIN 6539 specification make it appropriate for a range of non-ferrous and ferrous materials in stub-length drilling applications. The Series 730 designation places it within a standardized line of precision carbide drills. Its short flute length limits deflection, making it particularly well-suited for rigid setups and applications requiring depth control in shallow-to-mid-range holes up to a maximum drilling depth of 0.402 inches.

Key Features

• Solid micrograin carbide construction for extended tool life and dimensional stability
• 118-degree faceted point with web thinning for reduced thrust force and improved self-centering
• Right-hand cut, regular spiral flute for efficient chip evacuation
• Stub (screw machine) length body minimizes deflection in rigid fixturing
• Straight-cylindrical shank compatible with standard drill chucks and collets
• Built to DIN 6539 specification with h8 diameter tolerance for consistent fit

Compatibility

Designed as a general-purpose stub-length carbide drill bit per DIN 6539, suitable for use in CNC machining centers, drill presses, and other rigid drilling setups where a straight-cylindrical shank and 0.0995-inch diameter are required. No specific machine or system compatibility was stated in the product data.

Installation Notes

Installation and use should be performed by qualified machinists or tooling professionals familiar with carbide tooling requirements. Secure the shank fully in a precision collet or drill chuck before operation and verify runout is within acceptable limits, as carbide is brittle and sensitive to lateral loading. Never use carbide drills in hammering or impact modes. Follow all applicable shop safety procedures and machine-specific operating parameters when setting spindle speed and feed rate.