Guhring 9006510083300 Jobber Drill Bit 21/64in Hss Tin

Product Description

The GUHRING 9006510083300 is a jobber length drill bit designed for general-purpose metal drilling in production and maintenance applications. Built from M2 high speed steel with a titanium nitride (TiN) coating, it delivers improved surface hardness and wear resistance compared to uncoated HSS tooling. The bit measures 21/64 inches (0.3281 inches) in diameter with an overall length of 4.6063 inches and a flute length of 2.9528 inches. A standard 118-degree split point with web thinning reduces entry force and improves chip evacuation. This is a two-flute, right-hand cut bit with a straight-cylindrical shank, conforming to DIN 338 standards. Machinists, maintenance technicians, and fabricators install this type of tooling in drill presses, hand drills, and CNC applications.

This bit is rated for use in cast iron and steel workpieces, making it suitable for structural fabrication, machine shop work, and field maintenance drilling. The Series 651 designation indicates a regular spiral, tapered web configuration optimized for general-purpose drilling in ferrous materials. The 5xD flute-to-diameter ratio provides adequate chip clearance for through-hole and blind-hole applications within its maximum drilling depth of 2.9528 inches. No coolant-through capability is present, so external coolant or cutting fluid is recommended when drilling production quantities in steel.

Key Features

• M2 high speed steel construction with TiN coating for extended tool life in ferrous materials
• 118-degree standard point angle with web thinning for reduced entry force
• DIN 338 compliant jobber length geometry, Series 651
• Right-hand cut, regular spiral, two-flute design for efficient chip removal
• Straight-cylindrical shank compatible with standard drill chucks
• Diameter tolerance of +0.000 to -0.022 mm for consistent hole sizing

Compatibility

Designed for use in standard drill chucks accepting a 0.3281-inch straight-cylindrical shank. Primary workpiece materials are cast iron and steel. Conforms to DIN 338 jobber length specifications.

Installation Notes

This bit is installed by machinists and maintenance technicians using standard keyed or keyless drill chucks on drill presses, hand drills, or CNC spindles. Secure the shank fully in the chuck and verify runout before drilling production holes. Apply cutting fluid or external coolant when drilling steel to manage heat and extend tool life. Inspect the cutting edges for wear or chipping before each use and replace when point geometry is degraded.