Dormer Pramet A940 5.50 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK LONG SERIES DRILL DIN/ANSI

Meet the Dormer Pramet A940 5.50 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK LONG SERIES DRILL DIN/ANSI. This long-series PFX drill is engineered for precision holemaking across a range of metals, delivering reliable performance when accuracy and depth matter.

Why this A940 drill stands out

• 130° point for self-centering and reduced thrust: The angled point guides the drill into the workpiece with less wandering and lower starting force, helping you hit the mark on the first pass.
• Bright finish for smooth chip flow and reduced sticking: The polished surface minimizes material adhesion to the cutting edge, promoting cleaner holes and easier entry, especially in tougher metals.
• Parabolic flute design for deep-hole capability: Specialized flute geometry evacuates chips efficiently, enabling extra-deep holes in a single pass and improving stability during long drilling operations.
• Premium HSS-E with cobalt (5%): The cobalt-enhanced steel offers improved hardness and wear resistance, extending tool life across steel, stainless steel, and non-ferrous materials.
• Long-series, straight shank for reliability in extended holes: The straight shank and extended flute length are designed to maintain rigidity and accuracy when drilling longer depths to DIN/ANSI standards.
• High-speed, high-accuracy performance with 10xD capability: Engineered to produce high-quality holes at elevated speeds and feeds, with smooth operation suitable for 10xD drilling without frequent pecking in steel.
• H10 hole tolerance on demanding parts: When pushed to high speeds and feeds, the A940 delivers holes within tight tolerances (H10), supporting precise fits and finishes in production environments.

This drill is specifically designed for multi-application use—whether you’re machining steel, stainless steel, or aluminum, the A940’s combination of point geometry, flute design, and material choice helps you achieve consistent, repeatable results across a variety of tasks. Its DIN/ANSI long-series specification and straight shank ensure compatibility with a wide range of drilling rigs and fixtures, making it a dependable choice for workshop environments, job shops, and in-house toolrooms alike.

Ideal use scenarios

When you need clean, true-hole results in tough metals or want to minimize the time spent on drilling deep holes, the A940 excels. The 130° point minimizes wandering on initial contact, the parabolic flutes keep chips moving away from the cutting edge, and the cobalt-infused HSS-E construction resists wear during extended runs. Whether you’re fabricating exhaust components, creating pass-through holes in structural steel, or installing fasteners in stainless assemblies, this drill is built to deliver dependable performance at high speeds.

For best results, pair the A940 with appropriate feeds and speeds suited to your material and machine capability, monitor wear over the tool’s life, and ensure proper chip evacuation during extended drilling sequences to maintain accuracy and surface finish.