Osg 220-0635 Solid Carbide Jobber Drill Bit No. 52

Product Description

The OSG 220-0635 is a solid carbide jobber-length drill bit in wire gauge size No. 52, with a decimal diameter of 0.0635 inches (1.61 mm). It features a 118-degree web-thinned point, a regular spiral flute, and a bright uncoated finish. Overall length is 1.5 inches, with a flute length of 0.75 inches. The straight-cylindrical shank seats securely in standard drill chucks. This bit is part of OSG Series 220D and is built for general-purpose drilling in a wide range of metallic workpiece materials. Machinists, tool-and-die technicians, and precision fabricators are the typical users.

The 220-0635 is suited for blind hole drilling, cross-hole operations, through-hole drilling, and self-centering applications. It performs in steel, alloy steel, stainless steel, cast iron, aluminum, aluminum alloy, and aluminum silicate. The web-thinned point geometry reduces thrust at entry, making it well-suited for small-diameter precision work on ferrous and non-ferrous metals. Typical use is in CNC machining centers, drill presses, and hand-held power tools where small wire-gauge sizes are required.

Key Features

• Solid carbide construction for rigidity and wear resistance in metallic materials
• 118-degree web-thinned point reduces entry thrust and improves self-centering
• Regular spiral flute with two flutes for chip evacuation in blind and through holes
• Bright uncoated finish for direct inspection of tool wear
• Straight-cylindrical shank fits standard collets and drill chucks
• Diameter tolerance of +0 to -0.013 mm for precision hole sizing

Compatibility

Designed as an OEM-style general-purpose jobber drill bit for use with standard straight-shank drill chucks and collet systems compatible with wire gauge No. 52 tooling.

Installation Notes

Installation and use should be performed by qualified machinists or tool technicians familiar with small-diameter carbide tooling. Power down and de-energize the machine spindle completely before inserting or removing the bit. Carbide tooling is brittle - avoid side loading, interrupted cuts without proper support, or dropping the bit on hard surfaces. Verify chuck or collet runout before use, as excessive runout accelerates tool wear at this diameter.