Cleveland C44642 M42 Cobalt Tool Bit Blank 6 Inches

Product Description

The CLEVELAND C44642 is a rectangular tool bit blank manufactured from M42 cobalt high-speed steel. It measures 3/8 inches wide, 3/4 inches high, and 6 inches in overall length. The blank arrives ground, providing a consistent surface finish that allows machinists to grind custom profiles, form tools, single-point turning tools, or specialty cutting geometries directly from stock. M42 cobalt grade offers elevated heat resistance and hardness retention compared to standard M2 high-speed steel, making it a reliable choice for cutting harder workpiece materials at higher speeds without premature edge breakdown.

This tool bit blank is suited for use in manual lathes, boring mills, and tool-and-cutter grinder setups in both job shop and production machining environments. Machinists and toolmakers use blanks like this when a standard insert or catalog cutting tool does not match the required profile. The 6-inch length provides enough stock to grind multiple tool geometries or to regrind the same tool over an extended service life. Applicable in ferrous and non-ferrous machining applications where cobalt-grade tooling is specified.

Key Features

• M42 cobalt high-speed steel construction for improved red hardness and wear resistance
• Ground finish on all faces for dimensional consistency and ease of custom grinding
• Rectangular cross-section: 3/8 inches wide by 3/4 inches high
• 6-inch overall length provides ample stock for custom tool grinding or multiple regrinds
• Sold individually, allowing single-unit procurement for low-volume or prototype work

Compatibility

Designed as a general-purpose tool bit blank for use in standard tool bit holders and grinder setups that accept rectangular high-speed steel blanks of this cross-section.

Installation Notes

Tool bit blanks require grinding to final geometry before use in a cutting application. Use a bench or surface grinder with an appropriate wheel rated for high-speed steel. Follow all shop safety protocols, including eye protection and proper wheel guarding, when grinding. Ensure the tool holder or post is sized to match the 3/8-inch by 3/4-inch cross-section before mounting.