Value Collection 375-1007 Boring Bar Set 8 Piece M35 Cobalt

Product Description

The VALUE COLLECTION 375-1007 is an 8-piece boring bar set machined from M35 cobalt high-speed steel with an uncoated bright finish. The set covers minimum bore diameters from 3/16 inches on the smallest bar up to 3/8 inches on the largest bar, with maximum bore depths ranging from 9/16 inches to 1-7/8 inches. Overall lengths span 1-13/16 inches to 3-1/8 inches across the set. All bars feature a 3/8-inch shank diameter and a right-hand cutting direction. The M35 cobalt composition provides increased heat and wear resistance compared to standard M2 high-speed steel, making this set suited to harder workpiece materials and interrupted cuts. Machinists and toolroom operators working on small-diameter internal features will find this set covers a practical range of bore sizes in a single purchase.

This boring bar set is intended for use on manual lathes and small CNC turning centers where internal boring of small-diameter features is required. Typical applications include boring to size, truing existing holes, and achieving precise fits on bores that exceed the practical range of twist drills. The right-hand cutting direction suits standard spindle rotation on conventional turning equipment. The set is packaged with a wood storage stand to organize all eight bars and protect cutting edges between uses.

Key Features

• M35 cobalt high-speed steel construction for improved heat resistance and edge retention on hard or abrasive materials
• 8-piece set spanning minimum bore diameters of 3/16 inches through 3/8 inches
• Maximum bore depths from 9/16 inches to 1-7/8 inches across the set
• Uniform 3/8-inch shank diameter for consistent setup in standard boring bar holders
• Right-hand cutting direction for standard lathe spindle rotation
• Uncoated bright finish — no coating buildup to affect shank tolerances
• Includes wood storage stand to protect cutting edges and organize the set

Compatibility

Designed for use in standard boring bar holders and tool posts accepting a 3/8-inch shank diameter on manual lathes and small CNC turning centers.

Installation Notes

Installation is performed by qualified machinists following standard toolroom practices. Secure the shank fully in the boring bar holder with minimal overhang to reduce chatter and deflection. Power down and lock out the machine spindle before changing or adjusting tooling. Verify shank clamp torque per the machine tool manufacturer specifications before commencing any cut.