Osg 8608913 Screw Machine Drill Bit 23/64 Inch Xpm

Product Description

The OSG 8608913 is a screw machine length drill bit designed for high-performance metal cutting in demanding shop and field applications. Built from XPM high-speed steel with a coated finish, it features a 23/64 inch (0.3594 inch) diameter, a 130-degree drill point angle, and a right-hand spiral flute geometry. The shortened screw machine length body provides added rigidity compared to jobber-length bits, reducing deflection and improving hole accuracy in production drilling scenarios. A tapered web with R-thinning reduces thrust and improves chip evacuation. This bit is installed by machinists, tool-and-die professionals, and maintenance technicians working with ferrous and non-ferrous metals.

The OSG 8608913 is suited for drilling steel, alloy steel, cast iron, and nickel alloys in both manual and CNC drilling operations. The screw machine length format makes it a practical choice for turret lathes, drill presses, and machining centers where stub-length tooling is preferred for rigidity and clearance. The straight cylindrical shank fits standard drill chucks and collet holders without adapters. The 3xD flute-to-diameter ratio supports effective chip removal in moderate-depth holes.

Key Features

• 23/64 inch (0.3594 inch) diameter with +0 to -0.022 mm tolerance for consistent hole sizing
• 130-degree split point reduces walking and lowers entry thrust on hard materials
• XPM high-speed steel construction with coating for extended tool life in ferrous metals
• R-thinned, tapered web reduces cutting resistance and improves chip flow
• Screw machine (stub) length body increases rigidity and minimizes deflection
• Right-hand cut, regular spiral flute — compatible with standard drill chucks and collet holders

Compatibility

Designed for use in steel, alloy steel, cast iron, and nickel alloy workpieces. Fits standard straight-bore drill chucks and collet systems accepting a 10.00 mm (approximately 0.394 inch) straight cylindrical shank. Part of the OSG Series 1900 screw machine drill line.

Installation Notes

Secure the shank fully in the chuck or collet before operation and confirm runout is within acceptable limits for the application. Always match spindle speed and feed rate to the workpiece material and drill diameter per standard machining data — do not exceed the rated capacity of the drill press or machining center. Wear appropriate PPE including eye protection when drilling metal. Inspect the cutting edges and coating condition before each use; a chipped or worn point should be resharpened or the bit replaced before continuing.