Osg 8690800 Solid Carbide Screw Machine Drill Bit

Product Description

The OSG 8690800 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. Built to Series 6500 specifications, it features a 0.315 inch (8.00 mm) diameter, a 140-degree drill point angle, and a coated finish that extends tool life under load. The straight-cylindrical shank and R-thinned, tapered web geometry reduce thrust force and improve chip evacuation. Coolant-through capability supports sustained cutting speeds in production environments. Machinists and tool-room technicians working on CNC machines, drill presses, and screw machines will find this bit suited for tight-tolerance hole-making where tool runout and chip control matter.

This drill bit is rated for use in steel, alloy steel, cast iron, titanium, and titanium alloys, making it applicable across general machining, aerospace component work, and heavy equipment fabrication. Its screw machine length profile — shorter than a jobber bit — provides added rigidity and reduced deflection, which is especially useful when drilling in interrupted cuts or hard materials. The 3xD flute-to-diameter ratio and regular spiral flute design support consistent chip flow in both through-hole and blind-hole applications.

Key Features

• Solid carbide construction for hardness and heat resistance in ferrous and exotic metals
• 140-degree split-point geometry reduces walking and lowers entry thrust
• R-thinned, tapered web configuration improves chip clearance and reduces cutting force
• Coolant-through design supports high-speed production drilling with flood or mist coolant
• Coated finish extends tool life and reduces built-up edge in steel and titanium
• Screw machine length for increased rigidity and reduced deflection versus jobber-length bits

Compatibility

Designed for use in CNC machining centers, drill presses, and screw machines with straight-shank toolholders accepting an 8.00 mm shank diameter. Primary workpiece materials include steel, alloy steel, cast iron, titanium, and titanium alloys.

Installation Notes

Installation and tool changes should be performed with the machine fully powered down and spindle locked. Secure the straight-cylindrical shank in a properly sized collet or drill chuck to the manufacturer-specified clamping depth to prevent pullout under load. Verify coolant-through passages are clear and coolant supply is active before beginning high-feed cuts. Inspect the cutting edges and web for chipping or wear before each use, as carbide tools can fail suddenly if run on a damaged edge.