Cleveland C70174 Jobber Drill Bit Wire 41 Cobalt

Product Description

The CLEVELAND C70174 is a jobber-length twist drill bit designed for precision drilling in metals and soft alloys. Built from M42 cobalt high-speed steel with a gold oxide coating, it delivers extended tool life and heat resistance in demanding production environments. The bit carries a wire gauge size of 41, corresponding to a decimal diameter of 0.0960 inches, and features a 135-degree split point that self-centers on contact, reducing walking and the need for a center punch. Overall length is 2-3/8 inches with a 1-3/8 inch flute length. Installed by machinists, maintenance techs, and metalworking professionals, this bit suits bench drill presses, CNC machines, and handheld drills alike.

The C70174 is rated for primary use in aluminum and is well-suited to non-ferrous metals and soft steels in light to medium production drilling. The regular spiral flute promotes efficient chip evacuation, which is especially useful in gummy materials like aluminum. The straight-cylindrical shank with a 0.0960-inch diameter fits standard drill chucks and collet holders without modification. This bit meets NAS 907 Type J specification, making it appropriate for aerospace-adjacent and industrial maintenance applications where dimensional tolerances are critical. The diameter tolerance of -0.0005 to 0.0000 inches ensures consistent hole sizing across repeat operations.

Key Features

• M42 cobalt steel construction for superior heat resistance and edge retention over standard HSS bits
• 135-degree split point self-centers and reduces thrust force on entry
• Gold oxide coating reduces friction and extends service life in aluminum and non-ferrous metals
• Web-thinned, tapered web configuration lowers cutting resistance and improves chip flow
• Meets NAS 907 Type J specification for industrial and aerospace maintenance use
• Right-hand cut with regular spiral flute for efficient chip evacuation

Compatibility

Designed as an OEM-style replacement or direct-fit jobber drill bit for standard drill chucks and collet systems accepting a 0.0960-inch straight-cylindrical shank. Suitable for use in drill presses, CNC machining centers, and handheld electric drills.

Installation Notes

Secure the shank fully in the chuck or collet before drilling to prevent slippage and runout. Ensure the workpiece is clamped or fixtured before starting the cut, particularly in thin-sheet aluminum. Use appropriate cutting fluid or lubricant when drilling metals to extend bit life and maintain hole quality. Replace the bit if point geometry shows visible wear or chipping, as a degraded split point increases thrust force and can cause workpiece damage.