Value Collection E1419005 Solid Pilot Counterbore 10mm

Product Description

The VALUE COLLECTION E1419005 is a solid pilot counterbore designed for precision seat and bore finishing in metalworking and machining applications. Built from cobalt steel, it delivers the heat and wear resistance needed for cutting harder ferrous materials. The tool features a 10 mm counterbore diameter, a 5.5 mm pilot diameter, and 3 flutes for efficient chip evacuation and a clean finish. The straight-cylindrical shank measures 0.375 inches in diameter, making it compatible with standard drill press and milling machine chucks. With an overall length of approximately 5 inches (127 mm), this counterbore is suited for production and maintenance machining where tight tolerances on fastener seat depth are required.

This counterbore is used in machine shops, maintenance facilities, and manufacturing environments where socket head cap screws or similar fasteners with a 5 mm nominal thread size require a recessed seating surface. It is appropriate for use in ferrous metals, stainless, and harder alloy materials where cobalt steel tooling is preferred over standard high-speed steel. Typical applications include fixture building, tooling repair, and production drilling operations where controlled counterbore depth and concentricity with a pre-drilled pilot hole are essential. It is installed using a drill press, milling machine, or compatible CNC machining center.

Key Features

• Cobalt steel construction for improved heat resistance and extended tool life in hard materials
• 10 mm counterbore diameter sized for 5 mm fastener seat finishing
• 5.5 mm pilot diameter for positive alignment with pre-drilled pilot holes
• 3-flute geometry promotes chip evacuation and smooth cutting action
• Straight-cylindrical shank at 0.375 inches for use in standard collets and drill chucks
• Forward cutting direction for conventional drill press and milling spindle use

Compatibility

Designed as an OEM-style solid pilot counterbore for use with 5 mm nominal fasteners in straight-shank toolholders and collet chucks accepting a 0.375-inch shank diameter.

Installation Notes

This tool is installed by machinists and toolroom technicians using a drill press, knee mill, or CNC machining center with an appropriate collet or drill chuck. Secure the straight shank fully in the holder before operation and verify pilot alignment with the existing pilot hole before engaging the spindle. Always reduce spindle speed relative to standard twist drill recommendations when counterboring harder alloys with cobalt tooling. Follow shop safety protocols and applicable OSHA machine guarding standards when operating rotating cutting tools.