Cleveland C44640 Tool Bit Blank M2 High Speed Steel

Product Description

The CLEVELAND C44640 is a rectangle ground tool bit blank made from M2 high-speed steel, designed for machinists and tool-and-die professionals who grind their own cutting tools to custom profiles. At 3/8 inches wide, 3/4 inches high, and 6 inches in overall length, this blank provides a solid starting stock for single-point turning tools, boring bars, parting tools, and other custom-ground cutters. M2 HSS offers a strong balance of wear resistance, toughness, and grindability, making it a reliable choice for general-purpose lathe and mill applications. The ground finish ensures dimensional accuracy and a consistent surface for precise tool geometry.

This tool bit blank is suited for use in machine shops, maintenance facilities, and manufacturing environments where operators require custom-ground tooling. It is commonly used in manual lathe setups, turret lathes, and screw machine operations where standard insert tooling cannot achieve the required geometry. Machinists, tool grinders, and apprentice toolmakers working in job shops and production environments will find this blank a practical stock material for grinding single-point and form tools to specification.

Key Features

• M2 high-speed steel construction for strong wear resistance and re-grindability
• Rectangle ground profile ensures consistent width and height dimensions across the blank
• 3/8 inches wide by 3/4 inches high cross-section suits a range of tool holder sizes
• 6 inches overall length provides ample stock for initial grinding and future resharpening
• Ground finish supports accurate tool geometry when shaping on a bench or surface grinder

Compatibility

Designed as a raw stock tool bit blank for use in standard tool holders and grinder setups that accept 3/8 inches by 3/4 inches rectangular HSS blanks.

Installation Notes

Tool bit blanks are ground to final geometry by a machinist or tool grinder using a bench grinder or surface grinder equipped with an appropriate wheel for high-speed steel. Always dress the grinding wheel before use and allow the blank to cool during grinding to prevent thermal damage to the steel. Secure the blank firmly in a tool holder or vise before use in any cutting application. Follow shop safety procedures and wear appropriate eye protection during grinding operations.