Value Collection E1419008 Solid Pilot Counterbore 15mm

Product Description

The VALUE COLLECTION E1419008 is a solid pilot counterbore designed for creating flat-bottomed recesses that allow fastener heads to sit flush or below a workpiece surface. Built from cobalt steel, it handles harder workpiece materials and maintains cutting edge integrity under elevated heat. The tool features a 15 mm counterbore diameter, a 9 mm pilot diameter for positive bore alignment, and three flutes for efficient chip evacuation. The straight cylindrical shank measures 0.5 inches in diameter, making it compatible with standard drill press and milling machine chucks. It cuts in the forward direction and has an overall length of 6 inches (152.4 mm). Machinists and tool-and-die professionals rely on this style of counterbore for precision hole preparation in production and maintenance environments.

This counterbore is suited for metalworking applications where M8 fastener heads must be seated flush with or recessed below a metal surface. Typical use cases include machine frame assembly, fixture building, and component fabrication where a clean, flat-bottomed recess is required around a drilled pilot hole. The cobalt steel construction makes it appropriate for use in alloy steels, stainless steel, cast iron, and other materials that generate high cutting temperatures. It is used in job shop, production, and maintenance-repair-operations settings on drill presses, mills, and hand-held drill motors with appropriate speed control.

Key Features

• Cobalt steel construction resists heat and wear when cutting hard and abrasive materials
• 15 mm counterbore diameter sized for M8 fastener head recesses
• 9 mm pilot diameter provides positive alignment with the existing drilled hole
• Three-flute geometry promotes chip clearance and smooth cutting action
• Straight cylindrical 0.5-inch shank fits standard drill chucks and collets
• Forward cutting direction for use in standard right-hand rotation spindles

Compatibility

Designed as an OEM-style solid pilot counterbore compatible with M8 fastener applications requiring a 15 mm head recess diameter and a 9 mm pilot bore.

Installation Notes

This tool is installed and used by machinists, toolmakers, and maintenance technicians on drill presses, milling machines, or hand-held drill motors. Secure the straight shank firmly in a properly sized chuck or collet before operation and confirm the pilot fits the existing hole without excessive play. Use appropriate cutting fluid for the workpiece material to prolong tool life and improve surface finish. Set spindle speed according to published speeds-and-feeds data for cobalt steel counterbores and the specific workpiece material being machined.