Value Collection 460-6010 M42 Cobalt Tool Bit Blank

Product Description

The VALUE COLLECTION 460-6010 is a square tool bit blank ground from M42 cobalt high-speed steel, intended for machinists and toolmakers who need to grind custom cutting tool profiles. Measuring 1/8 inch wide by 1/8 inch high with a 2-1/2 inch overall length, this blank provides the raw stock necessary to hand-grind lathe bits, boring tools, and specialty form tools to exact geometry. M42 cobalt HSS offers elevated red hardness and wear resistance compared to standard M2 HSS, making it well suited for harder workpiece materials and interrupted cuts. Weighing approximately 0.06 pounds, the blank is compact and easy to handle at the grinder.

This tool bit blank is used in machine shops, toolrooms, and maintenance environments where off-the-shelf insert tooling cannot replicate the required cutting geometry. Typical applications include single-point lathe turning, threading, and form-tool work on manual lathes and small CNC machines. Machinists grind the blank to a specific relief, rake, and nose radius using a bench grinder or tool-and-cutter grinder. The square cross-section seats consistently in standard tool holders and boring bar holders sized for 1/8 inch stock.

Key Features

• M42 cobalt HSS material grade for improved red hardness and wear resistance over standard M2
• Square cross-section at 1/8 inch wide by 1/8 inch high for consistent seating in tool holders
• 2-1/2 inch overall length provides sufficient stock for grinding multiple tool profiles over the blank's service life
• Unground blank format allows custom geometry to be applied at the point of use
• Lightweight at 0.06 pounds for easy handling during bench grinding operations

Compatibility

Designed as a standard tool bit blank for use in 1/8 inch tool holders, boring bars, and fixture slots on manual lathes and small machining equipment requiring a square HSS blank of this cross-section.

Installation Notes

Tool bit blanks are ground to final geometry by a machinist or toolmaker using a bench grinder or tool-and-cutter grinder equipped with an appropriate wheel. Ensure the grinding wheel is rated for HSS cobalt alloys before use. Secure the workpiece firmly and use proper eye protection and grinding rests throughout the sharpening process. Allow the blank to cool during grinding to avoid drawing the temper of the cobalt HSS material.