Osg HP253-5311 Screw Machine Drill Bit 17/32 Inch Carbide

Product Description

The OSG HP253-5311 is a solid carbide screw machine length drill bit designed for high-performance drilling in ferrous metals. It cuts at 17/32 inch (13.50 mm) diameter with a 140-degree split point and an R-thinned web for reduced thrust and improved centering. The straight-cylindrical shank seats securely in standard drill chucks and quick-change holders. Two spiral flutes with a tapered web configuration evacuate chips efficiently during through-hole and blind-hole operations. At 0.376 pounds, this is a compact, rigid tool built for production environments where tight tolerances and consistent hole quality are required.

This drill bit is suited for machining steel, alloy steel, and cast iron in both job shop and production settings. The screw machine length body keeps overhang short, improving rigidity and reducing deflection when drilling on CNC machining centers, turret lathes, and manual drill presses. The 3xD flute-to-diameter ratio is well matched to shallow-to-moderate depth holes typical in screw machine and turning center work. Machinists and tool crib personnel handling Series HP253 tooling will find this bit a direct fit for ferrous material applications.

Key Features

• Solid carbide construction for rigidity and long tool life in ferrous materials
• 140-degree drill point angle reduces thrust and improves self-centering
• R-thinned web minimizes cutting resistance at entry
• Tapered web configuration with regular spiral flutes for consistent chip evacuation
• Screw machine length body reduces overhang and deflection
• Diameter tolerance of +0.007 to +0.025 mm for controlled hole sizing

Compatibility

Designed for drilling steel, alloy steel, and cast iron as part of the OSG HP253 series screw machine length carbide drill line.

Installation Notes

Installation and tool changes should be performed with the machine fully stopped and locked out per facility safety procedures. Seat the straight-cylindrical shank fully into the holder or chuck and verify runout before beginning a cut. Carbide tooling is brittle — avoid interrupted cuts or side-loading that exceed the tool's design parameters. Consult the machine manufacturer's recommended feeds and speeds for solid carbide drills in the workpiece material being machined.