Titan Usa TR97476 Solid Pilot Counterbore 0.474 in 4 Flute Hss

Product Description

The TITAN USA TR97476 is a solid pilot counterbore designed for precise counterboring of cap screw seat holes in metalworking and machining applications. Built from high speed steel (HSS) with a bright, uncoated finish, this tool delivers consistent cutting performance on ferrous and non-ferrous materials. The 0.474 inch counterbore diameter pairs with a fixed 5/16 inch standard pilot that keeps the tool centered over the pilot hole during the cut. With four flutes and a 3/8 inch shank diameter, it fits standard drill press and milling machine chucks. Overall length is 6.125 inches, giving adequate reach for most workpiece setups.

This counterbore is sized for 5/16 inch cap screws and is used by machinists, tool and die workers, and maintenance technicians to create clean, flat-bottomed recesses that allow fastener heads to sit flush or below the workpiece surface. It is suited for production shops, job shops, and maintenance and repair operations (MRO) where accurate, repeatable counterboring is required. The HSS construction makes it appropriate for manual and low-speed CNC setups on steel, aluminum, cast iron, and similar materials.

Key Features

• 0.474 inch counterbore diameter sized for 5/16 inch cap screw heads
• Fixed 5/16 inch standard pilot for positive tool alignment
• Four-flute geometry for smooth cutting and chip evacuation
• High speed steel construction for durability across a range of metals
• Bright, uncoated finish suitable for general-purpose machining
• 3/8 inch shank diameter fits common drill press and milling chucks

Compatibility

Designed for use with 5/16 inch cap screws. Compatible with drill presses, milling machines, and similar machine tools accepting a 3/8 inch straight shank.

Installation Notes

This tool is installed and operated by machinists or maintenance technicians using a drill press, milling machine, or similar machine tool. Always secure the workpiece firmly before cutting and ensure the machine spindle is fully stopped before changing or inspecting the tool. Use appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality. Inspect the pilot for wear before each use to avoid misalignment or oversized counterbores.