Guhring 9006580023700 Cobalt Drill Bit No. 42

Product Description

The GUHRING 9006580023700 is a cobalt jobber length drill bit sized to wire gauge No. 42, with a decimal diameter of 0.0935 inches. It features a titanium nitride (TiN) coating over a cobalt steel body, providing added surface hardness and heat resistance during cutting operations. The 130-degree split point with web thinning reduces entry force and improves self-centering on hard materials. At 2.25 inches overall length, this is a compact drill suited for close-tolerance drilling in ferrous metals. Machinists, tool and die technicians, and maintenance professionals use this bit in drill presses, CNC machining centers, and hand drills for precision hole work.

This bit is designed for drilling cast iron and steel, including alloy steels and general structural steels. The parabolic flute geometry improves chip evacuation in deep-hole applications up to a maximum drilling depth of approximately 1.041 inches. The straight-cylindrical shank at 0.0933 inches allows seating in standard drill chucks and collet holders. Series 658 conforms to DIN 338 standards, making it a recognized specification in industrial and maintenance environments where dimensional accuracy is required.

Key Features

• Cobalt steel construction with TiN coating for extended tool life in ferrous materials
• 130-degree drill point angle with web thinning for reduced thrust and accurate entry
• Parabolic flute profile promotes efficient chip removal at a 5xD flute-to-diameter ratio
• Straight-cylindrical shank compatible with standard drill chucks and collet systems
• Conforms to DIN 338 specification for consistent dimensional tolerances
• Right-hand cut with 2-flute configuration for general-purpose metal drilling

Compatibility

Designed as a DIN 338-compliant replacement or standard tooling selection for drilling cast iron and steel workpieces. Primary workpiece material codes K and P per DIN classification. Compatible with any drill press, machining center, or portable drill using a chuck or collet sized for a straight-cylindrical shank at approximately 0.093 inches.

Installation Notes

Installation and use of this drill bit is typically performed by machinists, maintenance technicians, or tool and die professionals. Secure the shank fully in the chuck or collet before operation and verify runout before beginning a cut. Use appropriate cutting fluid or coolant for steel and cast iron applications to manage heat buildup, as this bit does not support through-coolant delivery. Follow applicable workplace safety and machine guarding standards when operating rotating cutting tools.