Dormer Pramet A413 M6 HSS ST STRAIGHT SHANK STEP 180 DEG SHORT SERIES (X2.5D) DRILL

The Dormer Pramet A413 M6 HSS Straight Shank Step Drill is a purpose-built tool for creating counterbored clearance holes for standard metric threads. Designed for use in both CNC and conventional machines, this short-series drill features a 118° pilot and a 180° counter bore to ensure accurate hole preparation in a single operation.

Manufactured with premium HSS and finished with a steam oxide coating, it resists workpiece sticking and maintains cutting performance across a range of materials, including steel, aluminium, and stainless steel. The pilot diameter and length are specifically engineered to deliver the correct clearance drilling diameter and depth for standard threaded assemblies.

• 118° pilot with 180° counter bore: Delivers precise clearance holes for standard metric threads, enabling accurate assembly and reliable performance.
• Steam oxide finish: Reduces friction and prevents workpiece material from sticking to the cutting edge, improving chip control and tool life.
• Premium HSS with straight shank: Versatile, durable drilling solution that works across a wide range of materials and is compatible with both CNC and conventional machines.

This drill helps you achieve consistent clearance hole sizing quickly, supports a smooth workflow across CNC and manual operations, and delivers dependable results across steel, aluminium, and stainless steel projects. It’s a reliable choice for any threading or counterboring task, giving you confidence in repeatable, high-quality outcomes.