Osg 572031217 Carbide Screw Machine Drill Bit 5/16 in

Product Description

The OSG 572031217 is a solid carbide screw machine length drill bit designed for high-performance drilling in ferrous and hardened materials. Built to Series 5720 specifications, it features a 5/16 inch (0.3125 inch) diameter, a 180-degree flat bottom point, and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation. The EgiAs multi-layer finish extends tool life in demanding cutting applications. At 2.9528 inches overall length, this stub-length bit offers rigidity for precision hole-making in production environments. It is intended for use by machinists and CNC operators working in metalworking and fabrication shops.

This drill bit is suited for drilling steel, cast iron, and hardened materials in screw machine, turret lathe, and CNC drilling operations. Its compact screw machine length provides greater stability and reduced deflection compared to jobber-length bits, making it a practical choice for short-hole drilling at tight tolerances. The 3xD flute-to-diameter ratio and regular spiral flutes support consistent chip removal at higher feed rates. The straight shank fits standard drill chucks and collet systems without modification.

Key Features

• Solid carbide construction for strength and wear resistance in steel, cast iron, and hardened materials
• 180-degree flat bottom point with web thinning for reduced thrust and accurate hole entry
• EgiAs multi-layer proprietary coating for extended tool life and heat resistance
• Coolant-through design supports internal coolant delivery for deep-hole or high-speed applications
• Regular spiral flutes at 3xD ratio promote controlled chip evacuation
• Straight shank compatible with standard collets and drill chucks

Compatibility

Designed as an OEM-style screw machine length drill bit suitable for standard straight-shank drill chucks and collet toolholders used in CNC machining centers, turret lathes, and bench drilling equipment.

Installation Notes

Installation and use should be performed by qualified machinists or CNC operators. Ensure the spindle is fully stopped and the machine is locked out before changing or setting the bit. Confirm the shank is fully seated and the chuck or collet is properly torqued before operating. When using the coolant-through feature, verify coolant supply pressure and flow are set according to machine specifications before cutting.