Cleveland C44544 M42 Cobalt Tool Bit Blank 1/4 in Square

Product Description

The CLEVELAND C44544 is a square-ground tool bit blank machined from M42 cobalt high-speed steel. It measures 0.25 inches wide, 0.25 inches high, and 2.5 inches in overall length. M42 cobalt grade offers higher red hardness and wear resistance compared to standard M2 high-speed steel, making it well suited for machining tough, abrasive, or heat-resistant materials. The blank comes square ground on all faces, giving machinists a consistent, ready-to-grind starting profile for custom tool geometries. This bit is intended for use in manual lathes, boring bars, and tool holders where a 1/4-inch shank is specified.

This tool bit blank is used in machine shops, toolrooms, and maintenance environments where custom-ground single-point cutting tools are required. It is appropriate for turning, facing, boring, and threading operations on difficult-to-machine alloys, stainless steels, and hardened materials. Machinists grind the blank to the specific relief, rake, and nose radius angles required for the job. The 2.5-inch overall length provides adequate stock for initial grinding and resharpening over the life of the tool.

Key Features

• M42 cobalt high-speed steel for superior red hardness and extended tool life in demanding cuts
• Square ground on all faces for consistent stock removal and accurate custom geometry grinding
• 0.25 inches wide by 0.25 inches high cross-section fits standard 1/4-inch tool holders and boring bars
• 2.5-inch overall length provides ample material for initial profile grinding and multiple resharpenings
• Sold individually, one piece per package

Compatibility

Designed as a standard 1/4-inch square tool bit blank for use in manual lathes, boring heads, and tool holders accepting 1/4-inch shank cutting tools.

Installation Notes

Tool bit blanks are ground to final geometry by a machinist or tool grinder using a bench or surface grinder fitted with an appropriate grinding wheel. Secure the blank in a tool grinding fixture or vise to maintain consistent angles during the grinding operation. Always wear appropriate eye protection and follow shop safety procedures when grinding high-speed steel. Ensure the lathe or machine tool is powered off and locked out before seating or removing the ground tool bit from the holder.