Dormer Pramet R7131 5.00 mm CARBIDE TIALN 140 DEG CHAMFER DRILL

The Dormer Pramet R7131 5.00 mm carbide TiAlN chamfer drill is designed to produce chamfered entry holes for standard metric threads in a single, efficient pass. Its 140-degree pilot paired with a 90-degree chamfer helps create clean, accurate holes ready for tapping, reducing the need for extra finishing steps.

Built from premium carbide and finished with a Titanium Aluminium Nitride (TiAlN) coating, this drill combines strength with enhanced wear resistance. The coating improves heat handling, so you can drill harder materials with less wear, while the exact pilot diameter and length ensure the hole size and depth align with standard tapping specifications.

• 140° pilot with 90° chamfer: Delivers a precise chamfered hole in a single pass, optimized for standard metric thread tapping.
• TiAlN-coated premium carbide: Provides extended tool life and better performance when drilling harder materials, thanks to improved wear resistance and heat tolerance.
• Precisely sized pilot for tapping holes: The specific pilot diameter and length ensure the hole matches tapping-size requirements, reducing setup time and ensuring consistent thread depth.

Whether you’re fabricating, repairing, or performing routine maintenance, this drill helps you finish tapping-size holes quickly and consistently. The robust carbide core handles a range of materials—from steel to aluminum to stainless steel—while the coating and chamfer geometry work together to minimize downtime, improve hole quality, and extend tool life across everyday production workloads.