Osg 859533511 Screw Machine Drill Bit 0.1319 in Hss

Product Description

The OSG 859533511 is a screw machine length drill bit designed for high-performance drilling in metalworking and machining applications. Built from high speed steel (HSS) with a coated finish, it measures 0.1319 inches (3.35 mm) in diameter with an overall length of approximately 1.969 inches (50.00 mm). The 130-degree four-facet point reduces walking and improves chip clearance on entry, making it well suited for production drilling in steel, stainless steel, aluminum, and aluminum alloys. The straight-cylindrical shank seats securely in standard drill chucks and machine spindles.

This bit is intended for use in CNC machining centers, drill presses, and screw machines where short, rigid tooling is required. The screw machine length body minimizes deflection in tight setups. With a 5xD flute-to-diameter ratio and web-thinned, tapered web construction, it handles interrupted cuts and cross-hole drilling in ferrous and non-ferrous materials. Machinists, tool-and-die makers, and production shop technicians are the primary installers and users of this tooling.

Key Features

• 0.1319 inch (3.35 mm) diameter with tolerance of +0 to -0.018 mm for close-tolerance hole work
• 130-degree four-facet point reduces thrust and self-centers on entry
• Web-thinned tapered web lowers cutting resistance on break-through
• Two-flute regular spiral design promotes efficient chip evacuation
• Screw machine length body provides added rigidity versus jobber-length bits
• Compatible with steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces

Compatibility

Designed for use with standard drill chucks and machine spindles accepting a 4.00 mm (approximately 0.157 inch) straight-cylindrical shank. OSG Series 1100. Suitable for primary workpiece materials including steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate per manufacturer specification.

Installation Notes

This tooling is installed and operated by machinists and CNC technicians in production or job-shop environments. Ensure the machine spindle is fully stopped and the chuck is properly tightened before starting a cut. Use appropriate cutting fluid or coolant for the workpiece material when drilling steel or stainless steel to extend tool life. Note that this bit does not support coolant-through delivery.