Cleveland C44587 Tool Bit Blank M42 Cobalt 3/4in Square

Product Description

The CLEVELAND C44587 is a square tool bit blank manufactured from M42 cobalt high-speed steel, designed for use in custom tooling applications where a machinist or tool grinder profiles the cutting geometry to specification. Measuring 3/4 inch wide by 3/4 inch high with a 5-inch overall length, this blank is supplied in a ground finish with a 10-degree bevel angle, providing a consistent, ready-to-grind surface. M42 cobalt HSS offers high red hardness and wear resistance, making it well suited for cutting harder workpiece materials where standard M2 tooling would degrade prematurely.

This tool bit blank is used in metalworking shops, machine shops, and toolrooms where custom single-point lathe tools, boring bars, or specialty cutting tools are fabricated in-house. The square cross-section fits standard tool holders and lantern-style post systems common on engine lathes. Typical installers are machinists, tool and die makers, and grinding room technicians who grind the blank to the required geometry for turning, facing, threading, or parting operations.

Key Features

• M42 cobalt high-speed steel for superior red hardness and extended tool life in hard materials
• Square cross-section at 3/4 inch wide by 3/4 inch high fits standard lathe tool posts and holders
• 5-inch overall length provides material for multiple regrinding cycles
• Ground finish with 10-degree bevel angle delivers a consistent starting surface for precision grinding
• Sold individually, allowing single-unit procurement for toolroom use

Compatibility

Designed as an OEM-style replacement and general-use tool bit blank for standard 3/4-inch square tool holders and lantern-style tool posts used on engine lathes and manual turning machines.

Installation Notes

Grinding should be performed by a qualified machinist or toolroom technician using appropriate bench or surface grinders with HSS-rated wheels. Always use eye protection and follow safe grinding practices when profiling the blank. Ensure the tool holder set screws are properly tightened before engaging the workpiece. Do not use an unground blank as a cutting tool.