Guhring 9005150027800 Screw Machine Drill Bit 7/64

Product Description

The GUHRING 9005150027800 is a screw machine length (stub) drill bit designed for high-speed, precision drilling in ferrous materials. Built from powdered metal (PMASP60 grade) with a coated finish, it delivers consistent performance in cast iron and steel applications. The bit measures 0.1094 inches (7/64 inch) in diameter with a 130-degree drill point angle and a parabolic flute geometry that promotes efficient chip evacuation. Overall length is 1.811 inches, making it well-suited for short-reach, high-cycle drilling operations. The web-thinned, parallel web configuration reduces entry force and improves hole quality. Licensed tradespeople and machinists rely on this series for repeatable results in production environments.

This drill bit is appropriate for drilling cast iron and steel workpieces in both light manufacturing and maintenance repair operations. Its stub length format provides added rigidity compared to jobber-length bits, reducing deflection in close-tolerance setups. The Series 515 designation follows DIN 1897 standards, making it a recognized specification in CNC machining centers, drill presses, and hand-held pneumatic tools where a straight-cylindrical shank is required. Right-hand cut direction is standard for conventional drilling equipment.

Key Features

• Powdered metal construction (PMASP60) with coated finish for extended tool life in ferrous materials
• 130-degree drill point angle with web thinning for reduced thrust and cleaner entry
• Parabolic flute design promotes chip evacuation at a 3xD flute-to-diameter ratio
• Stub length format adds rigidity and reduces deflection in tight-clearance drilling
• Straight-cylindrical shank fits standard drill chucks without modification
• Manufactured to DIN 1897 specification for dimensional consistency

Compatibility

Designed as an OEM-specification stub drill bit per DIN 1897 standards, compatible with any drill press, CNC machining center, or pneumatic drill accepting a 0.1094-inch straight-cylindrical shank. Primary workpiece materials are cast iron and steel.

Installation Notes

Installation and use should be performed by qualified machinists or tradespeople familiar with cutting tool safety. Ensure the drill chuck is fully tightened and the workpiece is securely fixtured before operation. Disconnect power or depressurize the tool before changing bits. Do not exceed the maximum drilling depth of 0.466 inches in a single pass without retracting to clear chips.