Cleveland C44623 M42 Cobalt Tool Bit Blank 3/8x1/2x4 in

Product Description

The CLEVELAND C44623 is a rectangle-ground tool bit blank machined from M42 cobalt high-speed steel. It measures 3/8 inches wide, 1/2 inches high, and 4 inches in overall length. M42 cobalt grade provides high hardness and heat resistance, making it well suited for grinding into single-point turning tools, boring bars, parting tools, and other custom cutting profiles. The blank arrives ground on all surfaces for consistent dimensional accuracy. Machinists and tool-and-die technicians use this blank as raw stock to form and sharpen cutting tools to a specific geometry for lathe, shaper, or planer work.

This tool bit blank is used in machine shops, maintenance facilities, and production environments where operators grind their own cutting tools to match a specific workpiece material or operation. It is appropriate for cutting ferrous and non-ferrous metals, including harder alloys and stainless steels where M42 cobalt composition provides an advantage over standard M2 high-speed steel. The rectangle profile is the most common blank geometry for general-purpose single-point tool grinding.

Key Features

• M42 cobalt high-speed steel construction for elevated heat and wear resistance
• Rectangle ground profile on all faces for dimensional consistency out of the package
• 10-degree bevel angle provides a starting geometry for tool grinding
• 4 inches overall length gives adequate stock for repeated resharpening over tool life
• 3/8 inches wide by 1/2 inches high cross-section fits standard tool holders for that blank size

Compatibility

Designed as a general-purpose tool bit blank compatible with standard tool holders and grinding setups that accept a 3/8 inches by 1/2 inches rectangle blank cross-section.

Installation Notes

Tool bit blanks are ground to final geometry by a qualified machinist or tool grinder before use. Use appropriate wheel dressing and grinding wheel selection for high-speed steel cobalt grades. Secure the blank firmly in a tool holder or grinding fixture before cutting; never attempt to use an unground blank as a cutting tool. Follow shop safety protocols including eye protection and proper ventilation when grinding.