Osg 520056212 Screw Machine Drill Bit 9/16 in Carbide

Product Description

The OSG 520056212 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding industrial and metalworking applications. With a 9/16 inch (0.5625 inch) diameter and a 140-degree R-thinned point, it delivers clean entry and reduced thrust in tough materials. The overall length is 140 mm (5.51 inches), with a 72 mm flute length and a straight-cylindrical shank diameter of 0.625 inches. Coolant-through construction supports high-speed, extended-run operations. This bit belongs to OSG Series 5200 and is intended for use by machinists and tool-and-die professionals working in production environments.

This drill bit is suited for screw machine and short-hole drilling applications in ferrous and non-ferrous materials. It is rated for use in steel, stainless steel, cast iron, titanium, and titanium alloys. The 3xD flute-to-diameter ratio makes it a strong fit for CNC machining centers and drill presses where rigidity and chip evacuation are priorities. The right-hand cut and regular spiral flute geometry are standard for the majority of production drilling setups in manufacturing and fabrication shops.

Key Features

• Solid carbide construction for high wear resistance and heat tolerance in hard materials
• 140-degree R-thinned point reduces thrust and improves centering on entry
• Coolant-through design supports high-speed drilling and extends tool life
• Straight-cylindrical shank (0.625 inches) fits standard drill chucks and collets
• Tapered web configuration with R-thinned web thinning for improved chip flow
• Coated finish for added surface hardness and lubricity

Compatibility

Designed for use in CNC machining centers, drill presses, and screw machines where a screw machine length solid carbide drill bit in the 0.5000 to 0.6000 inch diameter range is required. Suitable for drilling steel, stainless steel, cast iron, titanium, and titanium alloys.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists familiar with carbide tooling. Ensure the spindle and chuck or collet are clean and true before seating the shank to avoid runout. Carbide tooling is brittle — do not use in applications with heavy interrupted cuts or excessive vibration without verifying tool suitability. Always engage coolant flow before the cutting edge contacts the workpiece when using the coolant-through feature.