Osg 15204005 Cobalt Jobber Drill Bit No. 6 Wire

Product Description

The OSG 15204005 is a cobalt jobber-length drill bit designed for high-performance drilling in steel and alloy steel. Sized to wire gauge No. 6 (0.2040 inches / 5.18 mm), it features a 130-degree split point with R-thinned web geometry that reduces thrust and promotes self-centering on entry. The titanium nitride (TiN) coating improves surface hardness and heat resistance, extending tool life in demanding production environments. With an overall length of 4-1/4 inches and a 2-7/16-inch flute length, this bit is suited for machinists, maintenance technicians, and trade professionals working with ferrous materials.

This bit is intended for blind hole drilling, cross hole drilling, and general drilling operations in steel and alloy steel workpieces. The straight-cylindrical shank (1/4 inch diameter) fits standard drill chucks and collet holders used in drill presses, CNC machining centers, and hand-held power drills. The regular spiral flute configuration handles chip evacuation efficiently in these common ferrous applications. It is sold individually and is appropriate for both shop and field use where No. 6 wire gauge sizing is required.

Key Features

• Cobalt construction provides elevated heat and wear resistance compared to standard HSS bits
• 130-degree R-thinned point reduces walking and lowers thrust force on entry
• Titanium nitride (TiN) coating extends tool life in steel and alloy steel applications
• 2-flute regular spiral design promotes efficient chip evacuation
• Tapered web configuration adds rigidity along the flute length
• Straight-cylindrical 1/4-inch shank compatible with standard drill chucks and collet holders

Compatibility

Designed for use in steel and alloy steel workpieces (primary workpiece material code P). Compatible with standard drill chucks and collet holders accepting a 1/4-inch straight-cylindrical shank. Suitable for drill presses, CNC drilling operations, and portable power drills requiring wire gauge No. 6 sizing.

Installation Notes

Install into a properly sized drill chuck or collet and tighten securely before use. Always wear appropriate eye protection and secure the workpiece before drilling. Cobalt bits in production applications benefit from appropriate cutting fluid or coolant to maximize tool life, though this bit does not have through-coolant capability. Inspect the cutting edge for wear or chipping before each use and replace if the point geometry is compromised.