Osg 8672280 Solid Carbide Jobber Drill Bit 2.8 Mm

Product Description

The OSG 8672280 is a solid carbide jobber-length drill bit designed for high-performance drilling in ferrous materials. It measures 2.8 mm in diameter with an overall length of 66 mm and a flute length of 20 mm. The 140-degree X-thinned point promotes self-centering and reduces thrust on entry, while the EgiAs coating extends tool life in demanding applications. The straight-cylindrical shank measures 4 mm in diameter and seats securely in standard drill chucks and collet holders. This bit is suited for machinists, toolroom technicians, and production drilling operations requiring tight diameter tolerances.

The OSG 8672280 is rated for drilling into steel, alloy steel, and cast iron. Its Series 6310 designation places it in OSG's high-performance carbide drill line, optimized for blind hole and cross-hole drilling as well as general through-hole operations. The 5xD flute-to-diameter ratio provides adequate chip clearance in short to medium depth holes. The tapered web configuration with X-thinned geometry reduces the chisel edge load, making it effective in production environments where consistent entry geometry matters. Sold individually.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• EgiAs coating for extended tool life and reduced built-up edge
• 140-degree X-thinned point for self-centering entry and reduced thrust
• Straight-cylindrical 4 mm shank fits standard chucks and collet tooling
• Right-hand spiral flute with regular helix for consistent chip evacuation
• Diameter tolerance of +0 to -0.014 mm for precise hole sizing

Compatibility

Designed for use in steel, alloy steel, and cast iron workpieces. Suitable for CNC machining centers, drill presses, and manual machines equipped with collet or chuck toolholding rated for 4 mm straight-cylindrical shanks. Part of OSG Series 6310.

Installation Notes

Install in a clean, properly sized collet or drill chuck and confirm shank seating before operation. Ensure spindle runout is within acceptable limits for the diameter being drilled, as carbide is brittle and sensitive to lateral loading. Do not use in hand-held drills or unsupported fixtures where vibration and deflection cannot be controlled. Inspect the cutting edge before each use and replace if chipping is detected.