Osg 650032711 Screw Machine Drill Bit 21/64 Solid Carbide

Product Description

The OSG 650032711 is a screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. Built from solid carbide with a coated finish, it measures 21/64 inch (0.3281 inches) in diameter and delivers exceptional rigidity and wear resistance compared to high-speed steel alternatives. The 140-degree split point reduces walking and improves penetration on hard materials. A right-hand, two-flute spiral design paired with R-thinned web geometry ensures efficient chip evacuation and reduced thrust. Coolant-through capability supports high-speed production environments. Licensed HVAC techs and trade professionals in metal fabrication, MRO, and production machining rely on this bit for consistent, repeatable results.

This drill bit is suited for drilling steel, alloy steel, cast iron, titanium, and titanium alloys in production and job-shop settings. The screw machine length (stub) format provides added stiffness over jobber-length bits, making it well-suited for CNC machining centers, drill presses, and automatic screw machines where shorter overhang reduces deflection. The 3xD flute-to-diameter ratio supports chip clearance in moderate-depth holes without sacrificing rigidity.

Key Features

• Solid carbide construction for hardness and heat resistance in ferrous and exotic metal drilling
• Coated finish extends tool life and reduces friction at the cutting edge
• 140-degree drill point angle minimizes walking and reduces entry burr
• Coolant-through design supports high-speed, high-feed production drilling
• R-thinned, tapered web reduces thrust and improves chip flow
• Straight-cylindrical shank (0.3750 inches diameter) fits standard drill chucks and collets

Compatibility

Designed as an OEM-style replacement and production drill bit within the OSG Series 6500 line, sized for applications in the 0.3000 to 0.3500 inch diameter range with a straight-cylindrical shank compatible with standard drill chucks and collet systems.

Installation Notes

Installation and use should be performed by qualified machinists or tool-and-die professionals familiar with CNC or manual drilling equipment. Ensure the machine spindle is fully stopped and the tool changer or chuck is secured before loading or removing the bit. Verify coolant-through lines are clear and pressure is set per machine specifications before running at elevated feed rates. Do not exceed the bit diameter tolerance range of +0 to -0.022 mm when specifying hole fits for precision assemblies.