Guhring 9005150091300 Screw Machine Drill Bit 23/64

Product Description

The GUHRING 9005150091300 is a stub-length screw machine drill bit designed for high-productivity drilling in cast iron and steel. Built from powdered metal (PMASP60 grade) with a coated finish, it delivers consistent performance in demanding shop and field applications. The 130-degree drill point angle with cone relief and web-thinned geometry reduces thrust and improves penetration in hard ferrous materials. At 23/64 inch (0.3594 inches) in diameter, this bit fits standard straight-cylindrical shank chucks and is suited for use on drill presses, CNC machining centers, and screw machine setups where a compact overall length is required.

This bit is built to DIN 1897 specification, placing it in the stub-length category for close-tolerance work where rigidity and minimal runout matter. The parabolic flute profile with a parallel web configuration improves chip evacuation in deep-hole conditions up to the maximum drilling depth of 1.036 inches. It is a right-hand cut tool intended for use by machinists, tool-and-die professionals, and maintenance technicians working with cast iron and steel workpieces. Series 515 identifies it within the GUHRING standard catalog lineup for powdered metal stub drills.

Key Features

• 23/64 inch (0.3594 inches) diameter with a diameter tolerance of +0.000 to -0.022 mm for close-fit applications
• 130-degree cone relief drill point with web thinning reduces entry thrust in hard ferrous materials
• Parabolic flute geometry with parallel web supports efficient chip removal
• Stub length per DIN 1897 increases rigidity and reduces deflection in short-reach setups
• Powdered metal construction with coated finish extends tool life versus standard HSS in abrasive materials
• No coolant-through design — compatible with flood, mist, or dry cutting as appropriate to the application

Compatibility

Designed for drilling cast iron and steel workpieces. Fits any standard straight-cylindrical shank chuck sized for 23/64 inch diameter tooling. Conforms to DIN 1897 stub-length specification for direct interchange with other DIN 1897-compliant drill bits in the 0.3500 to 0.4000 inch diameter range.

Installation Notes

Install in a clean, properly sized chuck and tighten to the chuck manufacturer's specification before use. Inspect the cutting edges and coating for wear or chipping before each use — a damaged tip should be resharpened or replaced before drilling. Follow your machine's recommended speeds and feeds for powdered metal tooling in the workpiece material. Always wear appropriate eye protection and secure the workpiece firmly before drilling.