Guhring 9002050060400 Jobber Drill Letter B Hss

Product Description

The GUHRING 9002050060400 is a high speed steel jobber-length drill bit sized to Letter B (0.2378 inches decimal) with a 118-degree standard point angle. Manufactured to DIN 338 and built from M2 high speed steel with an oxide finish, this bit is suited for general-purpose drilling in production and maintenance environments. The spiral flute geometry runs in a right-hand cutting direction, and the web-thinned, tapered web design reduces thrust and improves chip evacuation. Overall length is 101.00 mm with a straight-cylindrical shank. Licensed tradespeople and machinists handling ferrous and cast iron workpieces will find this a reliable production tool.

This drill bit is designed for general-purpose drilling in cast iron and steel workpieces, making it a practical choice for machine shops, maintenance facilities, and fabrication operations. The 2-flute spiral configuration and 5xD flute-to-diameter ratio support consistent chip clearing in both manual and CNC drilling applications. The straight-cylindrical shank fits standard drill chucks without adapters, and the Series 205 designation places it in a well-established Guhring jobber drill line built to DIN 338 tolerances.

Key Features

• Letter B size — 0.2378 inches decimal diameter with a tolerance of +0.000 to -0.022 mm
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• M2 high speed steel construction with oxide coating for improved surface lubricity
• Right-hand cut, 2-flute regular spiral geometry for efficient chip removal
• Straight-cylindrical shank (6.04 mm) fits standard drill chucks directly
• DIN 338 Series 205 — built to recognized dimensional and performance standards

Compatibility

Designed as a general-purpose OEM-style jobber drill for use in standard drill chucks and drilling fixtures accepting a 0.2378-inch straight-cylindrical shank; rated for cast iron and steel workpiece materials.

Installation Notes

Installation is performed by machinists or maintenance technicians using a drill press, lathe tailstock, or CNC spindle with an appropriate chuck. Secure the shank fully in the chuck and verify runout before drilling. Always use appropriate cutting fluid or lubricant when drilling steel to extend tool life and maintain hole quality. Inspect the cutting edges for wear or chipping before each use and replace the bit when dimensional tolerance or surface finish degrades.