Osg 8672980 Solid Carbide Jobber Drill Bit Letter W

Product Description

The OSG 8672980 is a solid carbide jobber-length drill bit sized to Letter W (0.3858 inches / 9.80 mm) with a 140-degree split point and EgiAs coating. It is built for high-performance drilling in steel, alloy steel, and cast iron. The R-thinned point promotes self-centering and reduces thrust at entry. With a straight-cylindrical shank at 10.00 mm diameter and a regular spiral flute, the bit delivers consistent chip evacuation in a compact jobber-length package. It is intended for use in CNC machining centers, drill presses, and production drilling applications where dimensional accuracy and tool life in ferrous materials are the priority.

This bit is rated for blind hole, cross hole, and through-hole drilling operations in steel (P), cast iron (K), and hardened materials (H) per ISO material group codes. The 5xD flute-to-diameter ratio and 61.00 mm flute length make it well suited for moderate-depth holes without a coolant-through supply. The Series 6310 designation places it in OSG's high-performance solid carbide jobber line. Machinists and tool-room technicians in metalworking shops and production environments are the primary users.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• EgiAs coating reduces friction and extends tool life in steel and cast iron
• 140-degree R-thinned point for self-centering entry and reduced thrust
• Straight-cylindrical shank fits standard drill chucks and collet holders accepting 10.00 mm shanks
• Regular spiral flute with tapered web for efficient chip evacuation
• Diameter tolerance of plus 0 to minus 0.022 mm for close-tolerance hole applications

Compatibility

Designed for use in CNC machining centers, drill presses, and manual machines with tool holders accepting a 10.00 mm straight-cylindrical shank. Suitable for drilling steel, alloy steel, and cast iron workpieces per ISO material groups P, K, and H.

Installation Notes

Installation and tool changes should be performed with the machine powered off and the spindle fully stopped. Secure the straight-cylindrical shank in a properly sized collet or drill chuck to the full recommended grip depth to prevent pullout under load. Coolant-through is not supported on this bit; apply external coolant or cutting fluid at the workpiece when drilling deep or interrupted cuts in hard materials. Follow the machine manufacturer and OSG published speeds and feeds for solid carbide tooling in the applicable workpiece material.