Cleveland C44547 M42 Cobalt Tool Bit Blank 3/8 X 3 Inches

Product Description

The CLEVELAND C44547 is a square-ground tool bit blank machined from M42 cobalt high-speed steel. It measures 3/8 inches wide by 3/8 inches high with an overall length of 3 inches (76.20 mm). Tool bit blanks in this grade are used by machinists and tool grinders to create custom single-point cutting tools, form tools, and specialty inserts. M42 cobalt provides higher heat resistance and hardness retention compared to standard M2 high-speed steel, making it suitable for interrupted cuts and harder workpiece materials. The ground finish ensures consistent dimensions straight from the package, reducing prep time at the grinder.

This blank is suited for use in manual and CNC lathes, boring bars, and custom toolholders where a shop-ground cutting edge is required. It is commonly used in job shops, tool rooms, and maintenance machining environments where off-the-shelf insert geometries do not meet the application. Machinists working with stainless steel, titanium, and other difficult-to-machine alloys frequently choose M42 cobalt blanks for their improved wear resistance at elevated cutting temperatures.

Key Features

• M42 cobalt high-speed steel construction for improved hardness and heat resistance
• Square cross-section at 3/8 inches x 3/8 inches for use in standard toolholders
• 3-inch overall length provides sufficient stock for grinding multiple edge profiles
• Ground finish ensures dimensional consistency and reduces blank preparation time
• Square end shape compatible with standard lathe and boring bar tool seats

Compatibility

Designed as a shop-ground tool bit blank for use in standard 3/8-inch toolholders on manual lathes, CNC turning centers, and boring setups requiring custom ground cutting tool profiles.

Installation Notes

Tool bit blanks are ground to a final cutting geometry by a qualified machinist or tool grinder using appropriate bench or surface grinding equipment. Secure the blank firmly in a tool grinding fixture before grinding to maintain correct angles and avoid chatter. Always use eye protection and follow shop safety procedures when grinding high-speed steel. Verify the finished tool geometry and clearance angles match the intended workpiece material and operation before use.