Osg 8690310 Screw Machine Drill Bit 3.10mm Solid Carbide

Product Description

The OSG 8690310 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. It measures 3.10 mm (0.1220 inches) in diameter with a 140-degree split point and an overall length of 74.00 mm (2.913 inches). The bit features a multi-layer coating, R-thinned web, and coolant-through capability, making it well suited for production drilling where tool life and hole quality matter. The straight cylindrical shank seats securely in standard drill chucks and collet holders. This is a right-hand cut, two-flute spiral design in the OSG Series 6500 lineup, built for machinists and toolroom technicians running CNC or manual drilling operations.

The OSG 8690310 is intended for drilling steel, alloy steel, cast iron, titanium, and titanium alloys. Its screw machine length body keeps the tool rigid and minimizes deflection in close-tolerance hole applications. Coolant-through capability makes it a practical choice for deep-hole applications on machining centers where internal flood or high-pressure coolant is available. The 3xD flute-to-diameter ratio supports chip evacuation in short-hole cycles on production lines, job shops, and precision component manufacturing environments.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive workpiece materials
• 140-degree drill point angle reduces thrust and improves centering on entry
• R-thinned web lowers cutting forces and extends tool life in steel and titanium alloys
• Coolant-through design supports high-pressure internal coolant delivery for heat management
• Multi-layer coating improves surface hardness and lubricity against workpiece material buildup
• Straight cylindrical shank compatible with standard ER collets and drill chucks

Compatibility

Designed as an OEM-style replacement and standard production drill for applications requiring a 3.10 mm screw machine length carbide drill in the OSG Series 6500 family, suitable for use in CNC machining centers and manual drill presses accepting straight-shank tooling.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully in the collet or chuck to the recommended grip length before torquing the retention hardware. Do not exceed the tool manufacturer's recommended speeds and feeds for the workpiece material, as solid carbide tools are sensitive to runout and improper setup.