Osg 650026411 Screw Machine Drill Bit 17/64 in Carbide

Product Description

The OSG 650026411 is a screw machine length drill bit engineered for high-performance drilling in demanding metal-cutting applications. Built from solid carbide and coated with OSG EgiAs coating, this bit delivers extended tool life and thermal resistance at elevated cutting speeds. The 140-degree point angle with R-thinned web geometry reduces thrust force and improves centering accuracy at entry. Coolant-through design enables effective chip evacuation and heat management in deep-hole applications. The straight-cylindrical shank measures 0.3125 inches in diameter, making it compatible with standard drill chucks and collet systems. This bit is sold individually as a single unit.

This drill bit is suited for production drilling in steel, alloy steel, cast iron, titanium, and titanium alloys. The screw machine length configuration — shorter overall length relative to standard jobber bits — provides added rigidity, reducing deflection and chatter in CNC machining centers, gang drill presses, and screw machine setups. The 3xD flute-to-diameter ratio and regular spiral flute design support steady chip flow in medium to high feed-rate operations. Machinists and toolroom operators working in production shops, job shops, or automated manufacturing cells will find this bit appropriate for precision hole work in ferrous and exotic metal stock.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard metal applications
• EgiAs coating improves surface lubricity and extends cutting life in steel and titanium
• 140-degree point angle with R-thinned web reduces entry thrust and improves hole accuracy
• Coolant-through design supports chip evacuation and thermal control during deep drilling
• Screw machine length provides greater rigidity than jobber-length bits, reducing deflection
• Diameter tolerance of +0 to -0.022 mm supports consistent hole sizing across production runs

Compatibility

Designed for drilling steel, alloy steel, cast iron, titanium, and titanium alloys. Fits standard drill chucks and collet holders accepting a 0.3125-inch straight-cylindrical shank. Part of the OSG Series 6500 high-performance carbide drill line, covering drill bit sizes from 0.2500 to 0.3000 decimal inch (6.50 to 8.00 mm) range.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the machine powered down and spindle fully stopped. Ensure the shank seating surface and chuck or collet bore are clean and free of chips before securing the bit. Follow machine manufacturer specifications for runout tolerances and clamping torque on the tool holder. Coolant-through setups require a compatible spindle and toolholder with internal coolant delivery to realize the full benefit of the through-coolant feature.