Value Collection 460-10714 M42 Cobalt Tool Bit Blank 3/8 in

Product Description

The VALUE COLLECTION 460-10714 is a square tool bit blank made from M42 cobalt high-speed steel, designed for machinists and tool grinders who need to profile and sharpen their own single-point cutting tools. The blank measures 3/8 inch wide by 3/8 inch high by 6 inches in overall length. M42 cobalt HSS offers higher hardness and heat resistance compared to standard M2 steel, making it well suited for cutting harder workpiece materials and high-production environments. This unground blank ships without a cutting edge, allowing the end user to grind any desired profile.

This tool bit blank is used in manual and CNC lathe operations, boring bars, fly cutters, and other single-point toolholding applications. It is appropriate for job shops, tool rooms, and apprentice training programs where custom-profiled cutting tools are required. The square cross section fits standard square-shank tool holders and lantern-style post holders common on engine lathes and turret lathes.

Key Features

• M42 cobalt HSS construction for improved red hardness and wear resistance over standard HSS grades
• Square cross section at 3/8 inch by 3/8 inch for compatibility with standard tool holders
• 6-inch overall length provides material for multiple regrinds over the tool life
• Unground blank allows machinists to profile any desired cutting geometry
• Weighs approximately 0.33 pounds for easy bench handling

Compatibility

Designed as a general-purpose replacement or custom-grind blank for square-shank tool holders accepting 3/8 inch square bit stock on engine lathes and similar single-point tooling setups.

Installation Notes

Grinding of tool bit blanks should be performed by a qualified machinist or toolmaker using appropriate bench or surface grinders fitted with aluminum oxide or CBN wheels rated for cobalt HSS. Always wear eye protection and use the grinding rest to maintain consistent angles. Secure the finished bit firmly in the tool holder before engaging the workpiece, and verify tool height is on center before cutting.