Osg 61552 Screw Machine Drill Bit 0.2047in Hss

Product Description

The OSG 61552 is a screw machine length drill bit designed for high-performance metal drilling in professional machining and fabrication environments. Built from high speed steel with a coated finish, it features a 120-degree faceted drill point and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation. The straight-cylindrical shank measures 6.00 mm (approximately 0.236 inches) in diameter, and the overall tool length is 70.00 mm (approximately 2.756 inches). The right-hand, regular spiral flute geometry suits high-volume production drilling and tool-room work alike.

This bit is suited for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format — shorter than jobber length — provides added rigidity and reduced deflection, making it well-matched for CNC machining centers, drill presses, and screw machine operations where tool overhang must be minimized. The 5xD flute-to-diameter ratio and two-flute spiral design facilitate reliable chip clearance across these materials.

Key Features

• High speed steel construction with coated finish for improved wear resistance
• 120-degree faceted drill point reduces walking and improves entry accuracy
• Web-thinned, tapered web lowers cutting thrust and extends tool life
• Screw machine length format delivers added rigidity over jobber-length bits
• Right-hand, two-flute regular spiral for efficient chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks and collets

Compatibility

Designed as a direct-fit replacement or production-use drill bit for applications requiring a 5.20 mm (0.2047 inch) diameter, straight-cylindrical shank tool in the OSG Series 1100 line. Primary workpiece materials include steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate.

Installation Notes

Installation and use should be performed by qualified machinists or tool-room technicians familiar with CNC and manual drill press operations. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit from the chuck or collet. Verify chuck or collet size matches the 6.00 mm shank diameter before securing. Do not exceed the speed and feed parameters recommended for the workpiece material and machine type.