Meet the Dormer Pramet A402 M6 HSS Straight Shank Subland Drill, a DIN 8376 standard-length solution built for precise clearance holes with an integral counterbore. Designed to create reliable counterbores for standard metric threads, this tool delivers accurate hole size and depth in a single, efficient operation.

• 118° pilot with 180° counterbore: Specifically engineered to generate the clearance drilling diameter and the corresponding counterbore depth for standard metric threads, reducing setup time and improving repeatability.
• Steam oxide finish: A smooth, anti-adhesion coating that minimizes workpiece material from sticking to the cutting edge, helping to extend tool life and maintain a clean cutting zone.
• Precisely defined pilot diameter and length: Ensures the correct clearance hole is produced every time, supporting accurate thread alignment and reliable fastener seating.
• Premium HSS material: Versatile enough for drilling a range of materials, including steel, aluminum, and stainless steel, making it a dependable choice for mixed-material workflows.
• Straight shank for CNC and conventional machines: The robust straight shank delivers stable performance, easy tool changes, and broad compatibility with milling centers and drill presses alike.
• Subland geometry in a standard-length drill: Designed to maintain consistent hole depth and finish, supporting clean, professional results in every assembly.

This drill is ideal for shops and production environments that need precise, repeatable counterbored clearance holes for M6 fasteners. Its combination of controlled pilot geometry, reliable counterbore depth, and durable HSS construction makes it a practical choice for both setup-heavy CNC workflows and hands-on conventional drilling tasks.