Guhring 9002050031500 Jobber Drill Bit 3.15mm Hss

Product Description

The GUHRING 9002050031500 is a jobber length twist drill bit designed for general-purpose hole-making in cast iron and steel. Built from M2 high speed steel with an oxide coating, this bit runs a 118-degree standard point angle and a right-hand spiral flute for efficient chip evacuation. The straight-cylindrical shank measures 3.15 mm in diameter and seats securely in standard drill chucks. At 65 mm overall length with a 36 mm flute length, it handles drilling depths up to approximately 31.28 mm. Web thinning reduces entry force and helps maintain point accuracy during penetration. This is a Series 205 bit manufactured to DIN 338 standards.

This bit is suited for production drilling and maintenance applications on cast iron and steel workpieces in shop, field, or light manufacturing environments. It is a single-unit item packaged individually and sized in the 3.00 mm to 4.00 mm diameter range, making it a common selection for precision hole sizes in the 0.1240 decimal inch class. Machinists, tool and die technicians, HVAC sheet metal fabricators, and mechanical contractors commonly use bits in this diameter range for tapping prep and component fitting.

Key Features

• M2 high speed steel construction for durability in ferrous materials
• Oxide coating reduces friction and provides light corrosion resistance
• 118-degree standard point angle for general-purpose drilling
• Web-thinned tapered web reduces thrust and improves chip clearance
• Right-hand spiral flute with regular helix for consistent chip evacuation
• Manufactured to DIN 338 specification for dimensional consistency

Compatibility

Designed as a general-purpose jobber length drill bit compatible with standard 3-jaw drill chucks and collet systems accepting a 3.15 mm straight-cylindrical shank. Primary workpiece materials are cast iron and steel.

Installation Notes

Secure the shank fully in the chuck before operation and verify runout before drilling production holes. Use cutting fluid or light oil when drilling steel to extend bit life and maintain tolerance. Drill point angle and web thinning are optimized for ferrous materials — avoid use on hardened steel beyond the M2 material grade rating. Diameter tolerance is +0.000 to -0.018 mm, so verify fit when drilling to close tolerance.