Guhring 9002050008400 No. 66 Hss Jobber Drill Bit

Product Description

The GUHRING 9002050008400 is a straight-shank jobber-length drill bit in wire gauge size No. 66, equivalent to 0.0331 inches in decimal. Built from M2 high speed steel with a bright uncoated finish, it features a standard 118-degree split-point geometry and a regular spiral flute for efficient chip evacuation. The overall length is 30.00 mm with a 10.00 mm flute length. Manufactured to DIN 338 specification, this bit delivers consistent dimensional accuracy with a diameter tolerance of +0.000 to -0.012 mm. It is suited for general-purpose drilling in metalworking, maintenance, and light fabrication environments where a small-diameter HSS bit is required.

This drill bit is designed for small-diameter drilling operations across a wide range of base materials including mild steel, aluminum, brass, and similar machinable metals. It fits standard drill chucks and collets sized for a 0.84 mm shank diameter. Typical applications include pilot holes, reference holes, and precision through-holes in sheet metal or light structural stock. Machinists, tool-and-die workers, and maintenance technicians in production and field settings are the primary users of this bit size.

Key Features

• Wire gauge size No. 66 with 0.0331 inch decimal equivalent for precise small-diameter drilling
• M2 high speed steel construction provides good wear resistance and heat tolerance
• 118-degree standard point angle suits general-purpose drilling in common metals
• Right-hand cutting, regular spiral flute promotes controlled chip removal in shallow holes
• Straight-cylindrical shank fits standard drill chucks and collets without modification
• Manufactured to DIN 338 specification for dimensional consistency and interchangeability

Compatibility

Designed as a DIN 338-specification jobber drill for use in standard drill chucks and collets accepting a 0.84 mm straight-cylindrical shank, suitable for bench drills, CNC drill heads, and handheld power tools in the applicable size range.

Installation Notes

This bit is intended for installation by machinists or qualified maintenance technicians familiar with small-diameter tooling. Secure the shank fully in the chuck or collet before operation and verify runout before drilling. Small-diameter bits are susceptible to breakage from side loading and excessive feed pressure — use appropriate feed rates for the material and bit diameter. Disengage the machine and allow all rotation to stop completely before changing or inspecting the bit.