Cleveland C15880 Jobber Drill Bit Wire 60 Cobalt

Product Description

The CLEVELAND C15880 is a jobber-length drill bit designed for precision drilling in demanding materials. Built from M42 cobalt high-speed steel with an oxide coating, it carries a wire gauge size of 60, which corresponds to a decimal diameter of 0.0400 inches. The 135-degree split point reduces walking on entry and lowers thrust requirements compared to standard 118-degree points. At 1-5/8 inches overall length with a 1/2-inch flute length, this is a compact, heavy-duty bit suited for tight-clearance drilling. Licensed machinists, tool-and-die shops, and maintenance technicians working with superalloys and hard metals reach for this bit when standard HSS tooling falls short.

This drill bit is intended for use in superalloys, stainless steels, and other difficult-to-machine materials where cobalt content provides the extra heat and wear resistance needed to maintain edge integrity. The fast spiral flute geometry promotes efficient chip evacuation in deep-hole applications relative to the bit diameter. The straight cylindrical shank fits standard drill chucks used in drill presses, CNC machining centers, and hand-held power drills. It is a single-piece item sold individually, making it practical for job-specific replacement or tooling inventory replenishment.

Key Features

• M42 cobalt HSS construction for extended tool life in superalloys and hard metals
• 135-degree split point reduces thrust and minimizes drill walk on entry
• Oxide coating provides lubricity and corrosion resistance during use
• Fast spiral flute design promotes chip evacuation in difficult materials
• Web-thinned, tapered web configuration reduces cutting resistance
• Meets ASME B94.11M and NAS specification requirements

Compatibility

Designed as an OEM-style jobber-length drill bit for use in standard straight-shank drill chucks; compatible with drill presses, CNC machining centers, and hand-held power drills accepting a 0.0400-inch straight cylindrical shank.

Installation Notes

Secure the straight cylindrical shank firmly in a compatible drill chuck and verify concentricity before beginning a cut. Use appropriate cutting fluid or coolant when drilling superalloys to manage heat buildup, as this bit does not support coolant-through delivery. Inspect the cutting edges before each use and replace the bit if chipping or dulling is observed, as running a degraded cobalt bit in hard material accelerates tool failure. Machining operations should follow applicable shop safety protocols and workholding best practices.