Engineered for deep-hole precision, the Dormer Pramet A977 9.00 mm HSS-E drill delivers exceptional reach and reliable performance in a single-pass operation. Built for tough metals, this extra-long, straight-shank drill is designed to conquer long, straight holes with consistent accuracy—even when space is limited.

Key features that matter in real-world drilling

• 130° point for self-centering and reduced push force, helping you start holes with minimal wandering and less operator fatigue.
• HSS-E with cobalt chemistry provides enhanced heat resistance and durability when drilling tough materials like steel and stainless steel, as well as aluminum alloys.
• Bright finish minimizes material sticking to the cutting edge, promoting cleaner holes and easier chip evacuation.
• Parabolic flute and parabolic core design optimized for deep-hole drilling, enabling long, continuous holes with improved chip control and reduced clogging.
• Extra-long length, straight shank ideal for applications requiring extended reach and compatibility with standard drill chucks and fixtures.
• DIN 1869 / 2 compliant, ensuring consistent dimensions and interchangeability in professional metalworking environments.

What you can drill effectively with this tool

• Very deep holes in steel, stainless steel, and aluminum where standard-length drills struggle to reach or maintain straightness.
• Applications in automotive, machinery, and fabrication where a single-pass deep-hole approach saves time and setup.
• Precise dowel or fastener holes that require minimal deviation and clean edges from start to finish.

Practical guidance for best results

• Operate at speeds and feeds appropriate for 9.0 mm HSS-E drills and the workpiece material; use cutting fluid or oil to extend tool life and improve surface finish.
• Maintain steady feed to take full advantage of the parabolic core, which supports controlled drilling without pecking cycles up to the recommended depth.
• Store with care to preserve the bright finish and prevent edge micro-chipping—keep dry and protected from corrosion.

Specifications at a glance

• Diameter: 9.0 mm
• Overall length: 320 mm
• Flute length: 220 mm
• Shank: Straight
• Drill type: PFX extra-long, HSS-E (with cobalt)
• Standard: DIN 1869 / 2
• Point angle: 130°

Designed for professionals who demand dependable depth, reach, and precision, the Dormer Pramet A977 9.00 mm HSS-E drill is a trusted choice for challenging deep-hole applications. It combines advanced material science with a geometry crafted for long, clean holes—reducing downtime and boosting productivity across metalworking tasks.