Chicago-latrobe 46695 Cobalt Jobber Drill Bit 25 Wire

Product Description

The CHICAGO-LATROBE 46695 is a cobalt jobber-length drill bit designed for demanding hole-making in hard and abrasive materials. Built to M42 cobalt high-speed steel specifications, this bit carries a gold oxide coating that reduces heat buildup and extends tool life under high-load drilling conditions. The 135-degree split point starts on contact without center-punching and minimizes walking on smooth surfaces. At 3 inches overall length with a 1-7/8 inch flute length, it fits standard jobber-length chuck setups. The straight-cylindrical shank measures 0.1495 inch in diameter, matching the wire gauge No. 25 drill size. Qualified to DIN 338 and NAS 907 Type J standards, this is a heavy-duty tool built for professional use.

This bit is intended for drilling titanium, stainless steel, high-nickel alloys, and other work materials that generate high cutting temperatures and accelerate tool wear. The regular spiral flute and tapered web configuration with web thinning improve chip evacuation and reduce thrust requirements in deep-hole applications. It is appropriate for aerospace, MRO, and industrial fabrication environments where NAS 907 compliance is required. Machinists and tool-and-die professionals working with tight-tolerance hole requirements will find the -0.0007 to 0.0000 inch diameter tolerance suitable for precision work.

Key Features

• M42 cobalt HSS construction handles high-heat drilling in titanium and hard alloys
• Gold oxide coating reduces friction and extends cutting life
• 135-degree split point eliminates the need for center-punching and reduces walking
• Web-thinned, tapered web design lowers thrust and improves chip flow
• Meets DIN 338 and NAS 907 Type J standards for aerospace and industrial applications
• Right-hand cut, regular spiral flute with straight-cylindrical shank for standard chuck compatibility

Compatibility

Designed as an OEM-style replacement or direct-use jobber-length drill bit for applications requiring wire gauge No. 25 sizing at 0.1495 inch diameter, conforming to NAS 907 Type J and DIN 338 specifications.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trade professionals familiar with proper speeds, feeds, and cutting fluid application for cobalt tooling. Always secure the workpiece and verify chuck runout before drilling. Power down and de-energize all equipment before changing tooling. Do not exceed the recommended cutting parameters for the workpiece material, as improper speed or feed can cause premature tool failure or workpiece damage.