Osg HP255-4213 Solid Carbide Jobber Drill Bit 10.7 Mm

Product Description

The OSG HP255-4213 is a solid carbide jobber-length drill bit engineered for high-performance drilling in ferrous materials. It carries a 140-degree point angle with an R-thinned web for improved self-centering and reduced thrust. The WD1 coating adds wear resistance and heat tolerance during high-cycle production runs. The bit measures 10.7 mm in diameter with a 12.0 mm straight-cylindrical shank, an overall length of 118.0 mm, and a flute length of 71.0 mm. Two spiral flutes in a regular helix promote chip evacuation in deep-hole applications. Coolant-through capability makes it suited for flood or through-spindle coolant delivery on CNC machining centers and drill presses.

This bit is designed for drilling into steel, alloy steel, and cast iron in production and job-shop environments. Typical applications include blind holes, cross holes, and through-hole drilling where self-centering entry and consistent diameter tolerance are required. The 5xD flute-to-diameter ratio supports moderate-depth holes without packing chips. Machinists and tool-and-die professionals working on steel fabrication, automotive components, and general metalworking will find this bit suited to high-volume drilling cycles where solid carbide outperforms high-speed steel in tool life.

Key Features

• Solid carbide construction for extended tool life in ferrous materials
• 140-degree point angle with R-thinned web for self-centering entry and lower thrust
• WD1 coating provides wear and heat resistance during high-cycle drilling
• Coolant-through design compatible with through-spindle or flood coolant systems
• 5xD flute ratio supports blind-hole and cross-hole applications
• Diameter tolerance of +0.007 to +0.025 mm for consistent hole sizing

Compatibility

Designed for use in steel, alloy steel, and cast iron workpieces. Suitable for CNC machining centers, drill presses, and other rigid machine tool setups that accept a 12.0 mm straight-cylindrical shank. Primary workpiece material codes P and K per ISO classification.

Installation Notes

Installation and tool changes should be performed with the machine powered down and spindle fully stopped. Secure the straight-cylindrical shank in a collet or drill chuck rated for the shank diameter before operation. Through-spindle coolant connections should be verified and leak-checked before running. Follow the machine tool manufacturer and OSHA guidelines for proper workholding and RPM limits when drilling ferrous materials with solid carbide tooling.