Value Collection 460-6400 M42 Cobalt Tool Bit Blank

Product Description

The VALUE COLLECTION 460-6400 is a square tool bit blank made from M42 cobalt high-speed steel, intended for use in custom tooling applications where a machinist grinds the blank to a specific cutting geometry. Measuring 0.5 inches wide by 0.5 inches high by 6 inches in overall length, this blank provides enough stock for multiple grinds or extended tool life. At 0.45 pounds, it is solid and dense, consistent with the high cobalt alloy content. M42 cobalt steel offers elevated heat resistance compared to standard M2 HSS, making it well suited for harder workpiece materials and interrupted cuts.

This tool bit blank is used in manual lathes, screw machines, and similar metal-cutting equipment where the operator profiles the cutting edge to match the specific operation. It is appropriate for job shops, tool and die environments, and machine shop maintenance settings. The square cross-section suits standard tool holders and lantern-style tool posts commonly found on engine lathes. The 6-inch length supports regrinding over an extended service period, reducing the frequency of blank replacement.

Key Features

• M42 cobalt high-speed steel for improved heat and wear resistance over standard HSS
• Square cross-section at 0.5 inches x 0.5 inches fits standard tool holders and lathe tool posts
• 6-inch overall length provides ample stock for profiling and repeated regrinding
• Unground blank allows machinists to shape any cutting geometry needed for the application
• Consistent alloy composition throughout the blank supports predictable grinding behavior

Compatibility

Designed as a general-purpose tool bit blank compatible with standard square-shank tool holders and lantern tool posts accepting 0.5-inch square tool bits.

Installation Notes

Tool bit blanks are ground to final geometry by a qualified machinist using a bench or pedestal grinder fitted with an appropriate wheel for high-speed steel. Secure the blank firmly in a tool holder or vise before any grinding operation and use proper eye protection and grinding guards throughout. Match the ground relief and rake angles to the workpiece material and cutting operation per standard machining references. Inspect the finished edge for cracks or chips before mounting in the machine.