Kennametal 6370985 Carbide Replaceable Tip Drill 21.5mm

Product Description

The KENNAMETAL 6370985 is a carbide replaceable tip drill in the KTFS series, designed for precision hole-making in demanding materials. It carries the ISO designation KTFST21500HPLM and the KCMS15 manufacturer grade, which indicates a fine-grain solid carbide tip geometry optimized for stainless steel applications. The drill features an AlTiN coating applied via PVD process, providing thermal resistance and extended edge life under high-speed cutting conditions. With a 140-degree drill point angle, helical flutes, and through-coolant capability, this tool delivers chip evacuation and thermal management in deep or interrupted drilling operations. It is intended for use by machinists and tooling professionals in CNC machining environments.

This replaceable tip drill is engineered primarily for stainless steel workpiece materials (ISO material code M), making it well suited for aerospace, medical, food processing, and industrial fabrication applications. The HPL insert geometry supports drilling on inclined exits, stacked plates, and standard through-hole operations. The clamp-style insert holding method keeps the tip securely indexed in the holder body. It is typically deployed in CNC machining centers where through-spindle coolant is available to take full advantage of the internal coolant delivery design.

Key Features

• Solid carbide KCMS15 fine-grain tip for superior edge retention in stainless steel
• AlTiN PVD coating for thermal resistance and extended tool life
• 140-degree drill point angle with standard point type for accurate entry
• Through-coolant design for effective chip evacuation and heat control
• HPL insert geometry supports inclined exit drilling and stacked plate applications
• 2-flute, 2-margin helical configuration with clamp-style tip retention

Compatibility

Designed as an OEM-style replaceable tip insert for use with compatible KTFS series drill bodies accepting size Z insert seats. Consult the KTFS body series documentation to confirm holder compatibility before ordering.

Installation Notes

Installation of replaceable tip drill inserts should be performed by qualified machinists following the tool manufacturer's clamping torque and seating procedures for the KTFS body. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before replacing the tip. Verify the insert seat and clamping surfaces are clean and free of chips before seating the new tip. Through-coolant connections should be confirmed operational before running the tool at full parameters.