Guhring 9007300051800 Carbide Stub Drill Bit 0.204 in

Product Description

The GUHRING 9007300051800 is a solid carbide screw machine length (stub) drill bit designed for precision drilling in high-production and general-purpose machining environments. Built to DIN 6539 standards, this bit features a 0.204 inch diameter, a 118-degree faceted drill point, and a web-thinned tip geometry that reduces entry force and improves hole accuracy. The straight-cylindrical shank measures 5.18 mm and seats securely in standard drill chucks and collet holders. With a micrograin carbide construction and bright uncoated finish, this bit is well suited for machinists, toolroom technicians, and CNC operators working with non-ferrous and light-alloy materials.

This drill bit is rated for general-purpose use with aluminum as the primary workpiece material. The stub-length body limits deflection in short-reach drilling setups, making it a practical choice for screw machine operations, CNC machining centers, and benchtop drill press work where rigidity matters. The 2-flute regular spiral design provides efficient chip evacuation in shallow to mid-depth holes. Maximum drilling depth is 0.718 inches (18.23 mm), and the flute-to-diameter ratio is 3xD. Coolant-through capability is not included in this design.

Key Features

• Solid micrograin carbide construction for wear resistance in aluminum and non-ferrous alloys
• 118-degree faceted drill point with web thinning for reduced entry force and accurate starts
• DIN 6539 standard, Series 730 designation
• Stub length body minimizes deflection in close-tolerance drilling applications
• Bright uncoated finish suitable for general-purpose use without coating-related thermal concerns
• Diameter tolerance class h8 for consistent fit in precision toolholders

Compatibility

Designed as an OEM-style replacement and general-purpose drill bit for use in standard straight-shank drill chucks, ER collet systems, and screw machine toolholders accepting a 5.18 mm shank diameter. Fits applications within the 0.2000 to 0.2500 inch drill bit size range.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and de-energized before changing tooling. Confirm the shank seats fully and evenly in the collet or chuck before tightening to the tool holder manufacturer specifications. Do not exceed the maximum drilling depth of 0.718 inches in a single pass without a peck-drilling cycle to clear chips.