Value Collection 460-0049 Tool Bit Blank M35 Cobalt

Product Description

The VALUE COLLECTION 460-0049 is a square tool bit blank made from M35 cobalt high-speed steel, designed for machinists and toolmakers who grind custom cutting profiles to suit specific lathe or boring operations. Measuring 5/16 inches wide by 5/16 inches high with an overall length of 2.5 inches, this blank provides a solid, uniform starting point for single-point tool grinding. M35 cobalt material delivers improved heat and wear resistance compared to standard M2 high-speed steel, making it well suited for cutting harder workpiece materials at elevated speeds. Weighing approximately 0.12 pounds, it is compact and easy to handle at the bench grinder.

This tool bit blank is commonly used in machine shops, maintenance departments, and toolrooms where operators grind their own lathe tools, boring bars, or form tools. It fits standard 5/16-inch tool holders and tool posts found on light to medium-duty engine lathes. The square cross-section allows the blank to be ground on any face, giving the machinist full control over rake angles, clearance angles, and cutting edge geometry to match the material and operation at hand.

Key Features

• M35 cobalt high-speed steel for improved hardness and heat resistance over standard HSS
• Square cross-section (5/16 inches x 5/16 inches) compatible with 5/16-inch tool holders and posts
• 2.5-inch overall length provides adequate stock for multiple re-grinds
• Unground blank surface allows full custom geometry to be applied at the bench grinder
• Lightweight at 0.12 pounds for easy bench handling

Compatibility

Designed as a general-purpose tool bit blank for use in 5/16-inch tool holders on standard engine lathes and similar turning equipment.

Installation Notes

Tool bit blanks are ground to final geometry by a qualified machinist or toolmaker using a bench or pedestal grinder equipped with an appropriate wheel for high-speed steel. Wear proper eye protection and use a tool rest set to the correct angle when grinding. Allow the blank to cool during grinding to avoid drawing the temper from the cutting edge. Finished tools should be inspected for correct geometry before use in any cutting operation.