Value Collection 460-10334 M35 Cobalt Tool Bit Blank

Product Description

The VALUE COLLECTION 460-10334 is a square tool bit blank ground from M35 cobalt high-speed steel. It measures 0.25 inches wide by 0.25 inches high with an overall length of 2.5 inches. M35 cobalt steel contains approximately 5 percent cobalt, which raises heat resistance and hardness compared to standard M2 HSS. This makes the blank well suited for grinding custom single-point lathe tools, form tools, or other cutting edges that will be used on tough or abrasive workpiece materials. Machinists and toolmakers grind these blanks to any required geometry on a bench or surface grinder. The part ships individually.

This tool bit blank fits standard quick-change and lantern-style tool posts sized for a 0.25-inch square shank. It is used in metalworking shops for turning, facing, boring, and threading operations on manual lathes. The small cross-section is common in bench-top and light-duty engine lathes. It is also used in toolroom environments where custom-profile cutters are ground to specification for short-run or prototype work on ferrous and non-ferrous materials.

Key Features

• M35 cobalt HSS construction for improved heat and wear resistance over standard HSS blanks
• Square end shape provides a clean, unground starting geometry for custom tool grinding
• 0.25 inches by 0.25 inches cross-section fits standard small-shank tool holders
• 2.5 inches overall length gives adequate stock for regrinding over the tool life
• Uniform blank geometry reduces setup time at the grinder

Compatibility

Designed as an OEM-style replacement or shop-supply blank for manual lathes and toolroom grinders that accept 0.25-inch square tool bit shanks.

Installation Notes

Grinding tool bit blanks is performed by a machinist or toolmaker using a bench grinder or surface grinder with an appropriate aluminum oxide or CBN wheel rated for high-speed steel. Secure the blank firmly in a tool bit grinding fixture to maintain consistent relief and rake angles. Wear ANSI-rated eye protection and inspect the grinding wheel for cracks before use. Allow the blank to cool during grinding to avoid drawing the temper of the cobalt steel.