Osg 61513 Screw Machine Drill Bit 0.0512 in Hss

Product Description

The OSG 61513 is a screw machine length drill bit designed for high-performance metal drilling in tight-tolerance production environments. It measures 0.0512 inches (1.30 mm) in diameter with an overall length of approximately 1.575 inches (40.00 mm) and a flute length of approximately 0.315 inches (8.00 mm). The 140-degree faceted point reduces walking and improves entry on hard materials. Ground from high speed steel with a coated finish, this bit is web-thinned with a tapered web configuration to reduce thrust and improve chip evacuation. It is sold individually and suited for use in CNC screw machines, drill presses, and production machining centers.

This drill bit is built for production drilling in steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine (stub) length format provides added rigidity compared to jobber-length bits, making it well suited for close-tolerance work in automated equipment and manual setups where runout and deflection must be minimized. The 5xD flute-to-diameter ratio supports effective chip clearing in these materials.

Key Features

• 0.0512 inch (1.30 mm) diameter with a tolerance of +0 to -0.014 mm for close-tolerance drilling
• 140-degree faceted drill point reduces walking and improves penetration on hard metals
• Web-thinned, tapered web reduces axial thrust and improves chip flow
• High speed steel construction with coated finish for extended tool life
• Screw machine (stub) length format adds rigidity over standard jobber-length bits
• Right-hand cut, 2-flute spiral design compatible with standard drill chucks and collets

Compatibility

Designed for use in CNC screw machines, drill presses, and production machining setups requiring a straight-cylindrical shank stub-length drill bit with a 3.00 mm (approximately 0.118 inch) shank diameter. Primary workpiece materials include steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate as specified by the manufacturer.

Installation Notes

Installation and use should be performed by qualified machinists or tool-and-die professionals familiar with small-diameter drill bit handling. Secure the straight-cylindrical shank in a properly sized collet or drill chuck, ensuring full shank engagement to prevent runout. Power down and de-energize all equipment before changing tooling. Avoid side-loading small-diameter bits, as deflection can cause breakage at this diameter.