Cleveland C44654 M42 Cobalt Tool Bit Blank 5x5/8x3/4 in

Product Description

The CLEVELAND C44654 is a rectangle ground tool bit blank machined from M42 cobalt high-speed steel. At 5 inches overall length, 5/8 inches wide, and 3/4 inches high, this blank provides machinists with solid, pre-ground stock ready for custom tool profiles. M42 cobalt grade delivers increased red hardness and wear resistance compared to standard M2 HSS, making it well suited for interrupted cuts, harder workpiece materials, and applications where heat buildup is a concern. The ground finish ensures dimensional accuracy and a consistent surface for tool grinding operations.

This tool bit blank is used in tool and die shops, production machine shops, and maintenance departments where custom lathe tools, boring bars, fly cutters, or specialty form tools are ground in-house. It fits standard tool holders and lantern-style tool posts sized for 5/8-inch or 3/4-inch shanks. Typical applications include turning, facing, boring, and threading on manual lathes. Industrial maintenance technicians and skilled machinists working with stainless steels, high-nickel alloys, and other difficult-to-machine materials benefit most from the M42 cobalt composition.

Key Features

• M42 cobalt high-speed steel for superior red hardness and extended tool life in demanding cuts
• Rectangle ground profile provides accurate, consistent stock dimensions for precision tool grinding
• 5 inches overall length gives ample material for shaping multiple cutting geometries
• 5/8 inches wide by 3/4 inches high cross-section fits standard lathe tool posts and holders
• Sold individually — one blank per package, no minimum bundle required

Compatibility

Designed as an OEM-style replacement or shop-stock blank compatible with standard lathe tool posts and holders that accept 5/8-inch by 3/4-inch shank tool bits.

Installation Notes

Tool bit blanks require grinding by a qualified machinist or tool grinder before use as a cutting tool. Ensure the lathe or grinding machine is fully powered down and secured before mounting or adjusting any tooling. Use appropriate personal protective equipment, including eye protection, during all grinding operations. Follow your shop safety plan and applicable OSHA standards for abrasive wheel and cutting tool grinding.