Osg 572037517 Screw Machine Drill Bit 3/8 in Carbide

Product Description

The OSG 572037517 is a screw machine length drill bit designed for high-performance drilling in steel, alloy steel, and cast iron. Built from solid carbide and finished with an EgiAs coating, it delivers durability and wear resistance in demanding production and toolroom environments. The bit features a 3/8 inch (9.53 mm) diameter, a 180-degree web-thinned point for accurate self-centering entry, a 2-flute regular spiral configuration, and coolant-through capability for improved chip evacuation and tool life. Overall length is 3.35 inches (85 mm), making it well suited for close-quarters and screw machine applications. Installation is performed by machinists and toolroom technicians.

This drill bit fits screw machine and CNC turning center applications where stub-length tooling is required. Its 3xD flute-to-diameter ratio suits shallow to moderate-depth holes in ferrous workpiece materials including steel, alloy steel, and cast iron. The straight-cylindrical shank accommodates standard drill chucks and collet holders sized for 3/8 inch shanks. The EgiAs coating is optimized for dry or minimum-quantity-lubrication cutting conditions, though the coolant-through design also supports flood or through-spindle coolant delivery. This bit is part of OSG Series 5720 and is intended for production-volume drilling operations.

Key Features

• Solid carbide construction for rigidity and extended tool life in ferrous materials
• EgiAs coating applied to both body and drill tip for enhanced wear resistance
• 180-degree web-thinned point improves centering and reduces entry thrust force
• Coolant-through design supports flood coolant or through-spindle delivery for chip control
• Straight-cylindrical shank fits standard chucks and collet holders at 3/8 inch diameter
• Screw machine (stub) length at 3.35 inches overall for rigid, close-clearance setups

Compatibility

Designed as an OEM-style replacement and production tooling option for screw machine and CNC lathe operations requiring a 3/8 inch solid carbide drill in the OSG Series 5720 family. Primary workpiece materials are steel, alloy steel, and cast iron.

Installation Notes

This tool is installed by machinists or CNC toolroom technicians. Disengage machine power and ensure the spindle has come to a complete stop before changing tooling. Verify chuck or collet bore is clean and sized correctly for the 0.3750 inch shank before tightening. Follow machine manufacturer torque and runout specifications for tool holding; excessive runout will reduce tool life and hole accuracy.