Osg HP255-1406 Solid Carbide Jobber Drill 9/64 in 140 Deg

Product Description

The OSG HP255-1406 is a solid carbide jobber-length drill bit in the HP255 high-performance series. It features a 9/64-inch (0.1406 inch / 3.57 mm) diameter with a 140-degree R-thinned point for self-centering entry and reduced thrust. The WD1 coating improves wear resistance and tool life in ferrous materials. With a 2-flute right-hand spiral configuration and tapered web, it evacuates chips efficiently in blind hole and cross-hole applications. Overall length is 66.00 mm with a 28.00 mm flute length and a 6.00 mm straight-cylindrical shank. This bit is designed for machinists, tool-and-die tradespeople, and industrial drilling operations requiring tight tolerances.

The HP255-1406 is suited for drilling steel, alloy steel, and cast iron in production and maintenance environments. The 5xD flute-to-diameter ratio and coolant-through capability make it appropriate for deep blind holes and cross-hole intersections where chip control and heat management are critical. Typical applications include blind hole drilling, cross-hole drilling, and self-centering operations on ferrous workpieces in CNC machining centers and manual drill press setups.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• WD1 coating for extended tool life on steel and cast iron
• 140-degree R-thinned point enables self-centering and reduces walking on entry
• Coolant-through design supports deep blind hole and high-feed applications
• Tapered web with 2-flute spiral geometry promotes efficient chip evacuation
• Straight-cylindrical shank fits standard drill chucks and collet holders

Compatibility

Designed for use on primary workpiece materials including steel, alloy steel, and cast iron (ISO material codes P and K). Compatible with CNC machining centers and manual setups accepting a 6.00 mm straight-cylindrical shank with coolant-through capability.

Installation Notes

This drill bit is installed by machinists and CNC operators in machine tool applications. Secure the shank fully in a compatible collet or drill chuck before operation and confirm coolant-through connections are clear before running. Follow the machine manufacturer and tooling guidelines for feed rate and spindle speed when drilling ferrous materials. Do not run the bit without appropriate workholding and ensure the workpiece is firmly secured to prevent movement during drilling.