Osg 650018311 Screw Machine Drill Bit 0.1835 in Carbide

Product Description

The OSG 650018311 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. It features a 0.1835 inch (4.66 mm) diameter with a 140-degree split point and a right-hand spiral flute configuration. The R-thinned web and tapered web design reduce entry force and improve chip evacuation. Coolant-through capability supports continuous cutting in production environments. This bit is built for machinists and tool-and-die professionals running CNC or manual equipment where tight tolerances and consistent hole quality are required.

This drill bit is suited for drilling steel, alloy steel, cast iron, titanium, and titanium alloys in both job shop and production floor environments. The screw machine length (stub) geometry provides added rigidity compared to jobber-length bits, making it well-suited for short-hole drilling, high-feed applications, and setups where minimizing deflection is critical. The straight-cylindrical shank fits standard drill chucks and collet holders. It carries a 3xD flute-to-diameter ratio and is part of the OSG Series 6500 line.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• 140-degree point angle with R-thinned web reduces thrust and improves self-centering
• Coolant-through design supports high-speed production drilling and chip clearance
• Right-hand cut with regular spiral flute for consistent chip evacuation
• Screw machine (stub) length geometry minimizes deflection in short-hole drilling
• Diameter tolerance of +0 to -0.018 mm for precise hole sizing

Compatibility

Designed for use in steel, alloy steel, cast iron, titanium, and titanium alloy workpieces. Part of the OSG Series 6500 high-performance carbide drill line. Fits standard straight-cylindrical shank drill chucks and collet tool holders accepting a 6.00 mm (approximately 0.236 inch) shank.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tool-and-die technicians familiar with carbide tooling. Ensure the machine spindle and tool holder are fully de-energized and locked out before changing tooling. Use appropriate cutting fluid or coolant-through capability to maintain tool life and hole quality. Avoid side loading or interrupted cuts that can cause carbide chipping.