Guhring 9003080095200 Cobalt Jobber Drill 3/8 in

Product Description

The GUHRING 9003080095200 is a cobalt jobber-length drill bit designed for demanding metal-cutting applications. It measures 3/8 inches (0.375 inches) in diameter with a 118-degree cone relief point and a left-hand cutting direction. The two-flute regular spiral geometry produces consistent chip evacuation in tough materials. Overall length is 5.236 inches (133 millimeters), with a flute length of 3.425 inches (87 millimeters) and a maximum drilling depth of 2 inches (72.72 millimeters). Built to DIN 338 standards and manufactured to an h8 diameter tolerance, this bit suits machinists and maintenance technicians working with ferrous metals and cast iron.

This drill bit is intended for general-purpose drilling in steel and cast iron in both production and maintenance environments. The left-hand cutting direction makes it particularly useful for extracting broken studs and fasteners, since the cutting action can back out the broken piece as it drills. The straight cylindrical shank at 9.52 millimeters fits standard three-jaw chucks on drill presses, CNC machining centers, and hand-held equipment. No coolant-through capability is present, so external cutting fluid or mist cooling is recommended when drilling deep in harder alloys.

Key Features

• Cobalt construction with steam oxide finish for improved heat resistance and surface protection
• Left-hand cutting direction aids in stud and broken fastener extraction
• 118-degree cone relief point with web thinning reduces entry force and walking
• Regular spiral flute geometry at a 5xD flute-to-diameter ratio for consistent chip removal
• DIN 338 standard with h8 diameter tolerance for precise fit in drill chucks
• Straight cylindrical shank compatible with standard chucks across multiple machine types

Compatibility

Designed as a general-purpose replacement jobber drill bit suitable for use in standard three-jaw chucks on drill presses, hand drills, and CNC machining centers. Primary workpiece materials are steel and cast iron per DIN material codes K and P.

Installation Notes

Installation and use should be performed by a qualified machinist or maintenance technician familiar with drill press or CNC equipment operation. Secure the shank firmly in the chuck and verify runout before drilling. Power down and lock out all equipment before changing or inspecting the bit. Apply appropriate cutting fluid or mist cooling at the cutting zone, as this bit does not support coolant-through delivery.