Cleveland C70208 Cobalt Jobber Drill Bit Wire 75

Product Description

The CLEVELAND C70208 is a cobalt jobber length drill bit in wire size 75, designed for precision drilling in demanding industrial and trade applications. Built from M42 cobalt high-speed steel and finished with a gold oxide coating, this bit delivers extended tool life and heat resistance at high cutting speeds. The 135-degree split point reduces walking and cutting pressure at entry, making it well suited for hard-to-start surfaces. The straight-cylindrical shank measures 0.021 inches in diameter, with an overall length of 1 inch and a flute length of 0.25 inches. A licensed HVAC tech, pipefitter, or maintenance machinist would reach for this bit when tight tolerances are required in small-diameter work.

This drill bit is intended for use in metal drilling applications where a small-diameter, high-performance bit is required. Its primary workpiece material rating is aluminum, though the M42 cobalt construction makes it suitable for a range of metals encountered in mechanical and industrial service work. The regular spiral flute and right-hand cut configuration are standard for most bench-top and handheld drilling operations. Web-thinned geometry reduces thrust force during penetration, which matters in production or repetitive drilling scenarios.

Key Features

• M42 cobalt high-speed steel construction for extended heat and wear resistance
• 135-degree split point reduces bit walking and lowers required thrust force
• Gold oxide coating provides lubricity and added surface hardness
• Web-thinned, tapered web geometry for cleaner entry and reduced cutting load
• Right-hand cut with regular spiral flute for standard drill press and handheld use
• Meets NAS 907 Type J specification for dimensional and performance consistency

Compatibility

Designed as an OEM-style replacement or standard-stock jobber drill bit for applications requiring wire size 75 at 0.021 inches diameter, conforming to NAS 907 Type J specification.

Installation Notes

This bit is installed and used by machinists, millwrights, and skilled trade technicians using standard drill chucks compatible with a 0.021-inch straight-cylindrical shank. Secure the shank fully in the chuck before operation to prevent slippage. Use cutting fluid appropriate for the workpiece material to extend bit life and maintain dimensional tolerance. Inspect the cutting edges before each use — M42 cobalt bits can chip if used on hardened steel beyond their rated capacity.