Cleveland C44582 Tool Bit Blank M42 Cobalt Square Ground

Product Description

The CLEVELAND C44582 is a square-ground tool bit blank manufactured from M42 cobalt high-speed steel. Designed for machinists and toolroom professionals who grind their own custom cutting tools, this blank provides a solid, consistent starting point for lathe tools, form tools, and other shop-made cutters. The blank measures 0.5 inches wide by 0.5 inches high with a 4-inch overall length. M42 cobalt grade delivers higher red hardness and wear resistance compared to standard M2 HSS, making it well-suited for interrupted cuts and harder workpiece materials. The ground finish ensures dimensional accuracy and a flat, burr-free surface before the operator profiles the cutting edge.

This tool bit blank is used in metalworking and machining environments where standard insert tooling is not practical or where a custom grind geometry is required. Typical applications include manual lathe work, toolpost grinding setups, and custom form-tool fabrication in job shops, maintenance departments, and toolrooms. The square cross-section suits standard tool holders and toolpost blocks sized for 0.5-inch shanks. It is sized for use in both light-duty and general-purpose manual lathes and milling applications where a solid HSS blank is preferred over carbide or indexable tooling.

Key Features

• M42 cobalt high-speed steel for improved red hardness and wear resistance over standard M2 HSS
• Square ground finish provides accurate, flat surfaces ready for custom edge grinding
• 0.5 inches x 0.5 inches cross-section fits standard 1/2-inch toolpost holders and blocks
• 4-inch overall length provides sufficient material for multiple regrinds over the tool life
• 10-degree bevel angle ground in for easier initial profiling by the end user

Compatibility

Designed as an OEM-style replacement or shop-stock tool bit blank for use in standard 1/2-inch square tool holders on manual lathes and similar toolpost setups.

Installation Notes

Tool bit blanks are ground to final geometry by a qualified machinist or toolroom professional using a bench or tool-and-cutter grinder. Secure the blank firmly in a grinding fixture or vise before shaping the cutting edge. Wear appropriate eye protection and follow all shop safety procedures during grinding. Ensure the tool holder is clean and properly torqued before mounting the finished tool in the machine.