Value Collection E1419010 Solid Pilot Counterbore 18mm

Product Description

The VALUE COLLECTION E1419010 is a solid pilot counterbore designed for precision countersinking of bolt-hole seat faces in metal fabrication and machining applications. Built from cobalt steel, this tool offers increased heat and wear resistance compared to standard high-speed steel, making it suitable for drilling harder ferrous materials. It features a straight-cylindrical shank measuring 0.5 inches (12.70 mm) in diameter and an overall length of 6 inches (152.4 mm). The 18 mm cutting diameter paired with an 11 mm pilot provides accurate centering and a clean seating surface. Machinists and tool-and-die professionals typically install this in a milling machine, drill press, or lathe for cap-screw and socket-head fastener seat preparation.

This counterbore is sized for use with 10 mm fasteners, producing an 18 mm diameter seat. It is suited for forward-cutting applications in ferrous and alloy metals where cobalt steel tooling is preferred for extended tool life. The straight-cylindrical shank fits standard drill chucks and collet systems accepting a 0.5-inch shank, making it compatible with a wide range of shop and production machine setups.

Key Features

• Cobalt steel construction provides superior heat resistance and durability over standard HSS tooling
• 18 mm counterbore diameter seats 10 mm fasteners with precision clearance
• 11 mm solid pilot ensures accurate centering in pre-drilled holes
• 3-flute geometry promotes efficient chip evacuation and smooth cutting action
• Straight-cylindrical 0.5-inch shank fits standard drill chucks and collet holders
• Forward cutting direction compatible with conventional machining setups

Compatibility

Designed as a replacement-style solid pilot counterbore for machining operations requiring a 10 mm fastener seat with an 18 mm diameter bore, using any machine tool equipped with a 0.5-inch straight-cylindrical shank chuck or collet.

Installation Notes

This tool is installed by machinists in milling machines, drill presses, or lathes equipped with a compatible chuck or collet. Secure the shank firmly before operation and verify the pilot fits the pre-drilled hole without excessive play. Apply appropriate cutting fluid for the workpiece material to extend tool life and reduce heat buildup. Always power down and lock out the machine before changing tooling.