The Dormer Pramet A400 M5 HSS ST Straight Shank Subland 90° Drill, built to DIN 8374 standards, is your go-to tool for precise clearance holes tailored to standard metric threads. With an 118° pilot followed by a 90° chamfer, this drill guides a chamfered hole that ensures easy tapping and reliable thread engagement right from the first pass.

The steam oxide finish minimizes workpiece material sticking to the cutting edge, reducing built-up edge and helping maintain a clean, accurate hole through repeated cycles. This makes it especially effective for production environments where consistency matters as much as speed.

Precision is built into the geometry: a specifically chosen pilot diameter and length are designed to create the correct clearance drilling diameter and depth for standard threads. Expect consistent hole sizes across batches and fewer rework passes, even when drilling tougher materials.

Materials and versatility: crafted from premium high-speed steel (HSS), this drill performs across a broad range of materials, including steel, aluminium, and stainless steel. The straight shank design ensures reliable clamping and stability on both CNC machines and conventional drilling setups, offering flexibility on any shop floor.

Subland geometry and standard length (X4D) combine to deliver a clean entry, controlled chip evacuation, and a finished clearance hole with minimal burrs. This makes it ideal for applications where precise dimensional control and smooth hole finishing are critical—such as fixture fabrication, mechanical assemblies, and automotive fastener pockets.

Key advantages at a glance

• 118° pilot with 90° chamfer for accurate clearance holes for metric threads
• Steam oxide finish reduces material sticking and built-up edge
• Precise pilot diameter and length tuned for correct clearance drilling
• Premium HSS for versatile use across steel, aluminium, stainless steel
• Straight shank compatibility with CNC and conventional machines
• Subland geometry delivers clean entry and finished hole
• DIN 8374 compliant, standard length X4D