Kennametal 6388620 Carbide Replaceable Tip Drill 11/32 in

Product Description

The KENNAMETAL 6388620 is a solid carbide replaceable tip drill designed for high-productivity hole-making in ferrous materials. Built on the KTFSS series platform, this drill features the KTFSS03438HPG tip insert in a KCP15A fine-grain carbide grade with a PVD-applied AlTiN coating. The cutting diameter is 0.3438 inches (11/32 inches), and the 180-degree drill point angle supports standard entry and exit conditions. Two helical flutes with a regular spiral and a 2-margin configuration provide stable chip evacuation during drilling cycles. Licensed machinists, tool-and-die tradespeople, and CNC machine operators install and swap these tips as part of a modular tooling program.

This replaceable tip drill is suited for drilling steel and cast iron in both roughing and precision hole-making applications. The HPG insert geometry and G-series insert seat sizing are matched to the KTFSS body. The tip is secured by clamping, eliminating adhesive or interference-fit assembly. Supported applications include straight drilling, inclined exit drilling, and stacked-plate drilling operations, making this tip a practical choice for structural, fabrication, and machined-component work in production environments.

Key Features

• KCP15A fine-grain solid carbide grade for wear resistance in steel and cast iron
• AlTiN coating applied via PVD process for heat and oxidation resistance
• 180-degree included drill point angle for standard entry drilling
• Two helical flutes with 2-margin, no-coolant-through configuration
• HPG insert geometry optimized for steel and cast iron chip formation
• Supports inclined exit and stacked-plate drilling applications

Compatibility

Designed as a replaceable tip insert for KTFSS-series modular drill bodies using G-series insert seat sizing. Compatible primary workpiece materials are steel (ISO code P) and cast iron (ISO code K).

Installation Notes

Replaceable tip drills are installed and serviced by machinists and tooling technicians on CNC machining centers and manual drilling equipment. Power down and lock out the machine spindle before seating or removing the insert tip. Seat the tip securely using the clamping mechanism specified for the KTFSS body - do not force the tip into position by striking it. Verify tip seating and runout before initiating a cutting cycle.