Osg 61553 Screw Machine Drill Bit 0.2087 in Hss

Product Description

The OSG 61553 is a screw machine length drill bit designed for high-performance metal drilling in production and maintenance environments. Built from high speed steel with a coated finish, this bit features a 0.2087 inch (5.30 mm) diameter, a 120-degree faceted drill point, and a regular spiral flute configuration. The shortened screw machine length body provides added rigidity compared to jobber-length bits, reducing deflection during high-volume or precision drilling operations. A web-thinned, tapered web design lowers entry resistance and improves chip evacuation. Machinists, tool-and-die workers, and maintenance technicians working with drill presses, CNC machines, and handheld equipment rely on this bit for consistent hole quality in metalworking applications.

The OSG 61553 is suited for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format is a common choice in production shop environments where short, rigid tooling is preferred in tight setups or gang-drilling fixtures. The straight cylindrical shank accepts standard drill chucks and collet holders sized for 6.00 mm shanks. The 2-flute spiral design handles chip clearing across the range of listed workpiece materials without requiring coolant-through capability.

Key Features

• 0.2087 inch (5.30 mm) cutting diameter with a tolerance of +0 to -0.018 mm for consistent hole sizing
• 120-degree faceted drill point with web thinning reduces thrust and improves centering
• High speed steel construction with coated finish for extended tool life in steel and aluminum
• Screw machine length body provides rigidity and reduced deflection versus jobber-length bits
• Regular spiral, 2-flute design promotes efficient chip evacuation in metalworking applications
• Straight cylindrical shank compatible with standard drill chucks and collet holders

Compatibility

Designed for use in standard drill presses, CNC drilling machines, and handheld drills equipped with chucks or collets accepting a 6.00 mm straight cylindrical shank. Suitable for workpiece materials including steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. Part of the OSG Series 1100 high performance drill line.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with machine tooling and safe drilling practices. Ensure the machine spindle is fully stopped and the power is locked out before securing or removing the bit from the chuck or collet. Verify chuck or collet sizing matches the 6.00 mm shank diameter before tightening. Follow applicable shop safety standards and machine manufacturer guidelines for feed rate and spindle speed selection based on workpiece material.