Osg 8680620 Carbide Screw Machine Drill Bit 0.2441 in

Product Description

The OSG 8680620 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. With a 0.2441 inch (6.20 mm) diameter and a 140-degree drill point angle, it delivers fast, accurate entry into hard and abrasive workpiece materials. The R-thinned web reduces thrust force at the point, while the tapered web configuration adds rigidity along the flute length. This bit is suited for production environments where tool life and hole quality in tough materials are critical priorities. It is installed and operated by machinists and tool-and-die professionals on CNC and manual drilling equipment.

The 8680620 is built for drilling steel, stainless steel, cast iron, titanium, and titanium alloys. Its screw machine length profile — shorter than jobber length — provides added rigidity and reduced deflection in tight setups or on short-travel drill heads. The 3xD flute-to-diameter ratio keeps chip evacuation efficient without sacrificing stiffness. Coolant-through capability makes it well matched to high-speed production runs where heat buildup would otherwise limit tool life. It fits standard straight-cylindrical shank toolholders and collet chucks.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive materials
• 140-degree split point with R-thinned web reduces walking and lowers thrust requirements
• Coolant-through design supports high-speed production drilling
• Right-hand spiral flute with regular spiral for consistent chip evacuation
• Screw machine length body adds rigidity and reduces deflection versus jobber length
• Coated finish for improved wear resistance and reduced friction

Compatibility

Designed for use in standard straight-cylindrical shank toolholders and collet chucks compatible with a 6.20 mm shank diameter. Primary workpiece materials include steel, stainless steel, cast iron, titanium, and titanium alloy. Part of the OSG Series 5200 high-performance carbide drill line.

Installation Notes

Installation and operation should be performed by qualified machinists familiar with cutting tool safety. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit from the toolholder. Verify collet or chuck runout is within tolerance before production drilling, as excess runout accelerates carbide tool wear. When using coolant-through capability, confirm coolant pressure and flow rate are appropriate for the machine and material per the shop's standard operating procedure.