Value Collection 375-5064 Boring Bar M35 Cobalt 1/2 in Shank

Product Description

The VALUE COLLECTION 375-5064 is a right-hand boring bar designed for precision internal boring operations on metalworking lathes and boring machines. Manufactured from M35 cobalt high-speed steel, this bar offers improved heat and wear resistance compared to standard M2 HSS tooling, making it well-suited for harder ferrous materials and interrupted cuts. It accepts a minimum bore diameter of 0.4375 inches (7/16 inches) with a maximum bore depth of 1.3125 inches (1-5/16 inches). The 1/2-inch shank diameter provides rigid tool holding in standard boring bar holders and turrets. Overall length is 2-11/16 inches. Licensed machinists and tool-and-die professionals are the primary users of this tooling.

This boring bar is intended for small-diameter internal turning and boring applications in job shop, production machining, and maintenance environments. It is suited for use on manual engine lathes, CNC turning centers, and boring mills where a compact, right-hand cutting geometry is required. Typical applications include opening, truing, or finishing bored holes in ferrous and harder alloy workpieces where cobalt-grade tooling is preferred over standard HSS for extended tool life.

Key Features

• M35 cobalt HSS construction for improved heat resistance and longer tool life on hard materials
• Right-hand cutting direction for standard lathe and boring mill setups
• Minimum bore diameter of 7/16 inches (0.4375 inches) for small-hole access
• Maximum bore depth of 1-5/16 inches (1.3125 inches)
• 1/2-inch shank diameter fits standard boring bar holders and turret blocks
• Compact 2-11/16-inch overall length for use in confined tool post setups

Compatibility

Designed as a standard replacement or stock boring bar for use in any lathe or boring machine tool holder accepting a 1/2-inch round shank with right-hand cutting orientation.

Installation Notes

Installation is performed by qualified machinists following standard toolroom practices. Secure the shank fully in the boring bar holder and ensure the cutting edge is set on or slightly above center height before engaging the workpiece. Power down and de-energize the machine spindle before mounting or adjusting tooling. Do not exceed the manufacturer-rated bore depth or extend the bar beyond the rated overhang, as excessive overhang increases deflection and chatter risk.