Meet the Dormer Pramet A940 21/32 Inch HSS-E High-Performance Multi-Application Straight Shank Drill — a purpose-built tool engineered for reliability, precision, and depth in a single pass. When you’re drilling tough materials or chasing tight tolerances, this long-series drill delivers consistent, repeatable results that keep your workflow moving.

Why this drill stands out

• 130° center-cutting point — self-centers with minimal push force, reducing wandering and ensuring clean entry even on fibrous or hard-to-align workpieces.
• Bright finish — a smooth cutting edge that minimizes material adhesion and chip welding, promoting smoother holes and easier part ejection.
• Parabolic flute design — optimized for debris evacuation, this flute geometry enables deeper holes in a single pass while maintaining stable feeds and reduced heat buildup.
• Premium HSS-E material — cobalt-enriched high-speed steel that sustains sharpness and wear resistance across a wide range of materials, including steel, stainless steel, and aluminum.
• Long-series, straight shank — compatible with a broad spectrum of toolholding systems (DIN/ANSI), delivering rigid performance at high speeds and feeds without chatter.
• High-accuracy performance — designed to produce high-quality, precisely sized holes with h10 tolerance, helping you meet tight engineering specs and finish requirements.

Ideal uses and practical advantages

Designed for professional machinists and fabrication shops, the A940 21/32" drill is perfect when you need dependable hole quality in a variety of materials. Use cases include quick-stop drilling in steel frames, precision pilot holes for stainless assemblies, or aluminum components where fast throughput and clean edges matter. The parabolic flute helps maintain chip clearance at depth, so you can push for deeper holes without compromising surface finish or dimensional accuracy. If your work involves DIN/ANSI-standard tooling and you require a single drill that can handle multiple applications, this is the tool you reach for first.

How it compares to typical drill bits

Compared with standard high-speed steel drills, the A940 in HSS-E delivers superior wear resistance in demanding metals, and its refined flute geometry supports deeper, cleaner holes with steadier feeds. The 130° point significantly reduces the risk of center-entry errors, which is especially valuable when setups are quick or changing between parts. Its bright finish and robust geometry help maintain edge integrity across high-speed drilling, reducing downtime from tool changes and rework.

Tips for best results

• Match cutting speed and feed rate to the material. For steel and stainless, start at conservative speeds and tune up as needed to preserve edge life.
• Use appropriate lubrication or coolants to maximize tool life and hole finish, especially on harder alloys.
• Ensure the workpiece is securely clamped to minimize deflection when drilling the deeper holes enabled by the parabolic flute design.
• Inspect hole diameter and surface finish regularly to verify ongoing h10 tolerance compliance during production runs.

Whether you’re outfitting a workshop, upgrading your drill bit collection for high-speed production, or seeking a reliable all-in-one drill for mixed-material projects, the Dormer Pramet A940 21/32 Inch HSS-E High-Performance Multi-Application Straight Shank Long Series Drill DIN/ANSI is built to deliver precision, depth, and durability in every hole.