The Dormer Pramet A978 9.50 mm HSS-E High Performance Multi-Application Straight Shank Extra Long drill is purpose-built for professionals who demand depth, precision, and versatility in a single tool. Designed to tackle challenging holes where reach matters, this 9.50 mm drill delivers reliable performance across a range of materials and applications.

Key features that set this drill apart

• 130° point for self-centering action and reduced push force, helping you start holes cleanly and stay on target without wandering.
• Bright finish minimizes workpiece adhesion to the cutting edge, promoting smoother starts and easier chip evacuation.
• Parabolic flute design engineered to drill very deep holes in a single pass, reducing the need for multiple pecks and improving hole quality on long reach jobs.
• Premium HSS-E material known for toughness and heat resistance, suitable for drilling a wide range of materials, including steel, aluminum, and stainless steel.
• Extra long length, straight shank optimized for applications where increased reach is required, while maintaining stable guidance in standard collets.
• Multi-application (Multi-APP) capability makes this drill a reliable choice for varied tasks—from fabrication and maintenance to precision engineering—without needing a toolbox full of specialty bits.
• DIN 1869 / 3 compliance ensures compatibility with compatible drill chucks and tooling setups, preserving performance consistency across setups.
• Pack of 3 provides dependable supply for extended projects or multiple machines, reducing the need for frequent reorders.

Whether you’re working on automotive components, appliance housings, or fabrication projects that demand deep, accurate holes, the A978 drill gives you a dependable blend of reach, control, and longevity. The 9.50 mm diameter is ideal for cleanly removing material in medium-to-heavy sections while maintaining a tight tolerance. The combination of HSS-E durability and a precision-ground tip translates into consistent hole geometry, less rework, and faster cycle times on demanding jobs.

Why this drill is the smart choice for professionals

In real-world work, the difference between a frustrating drilling session and a smooth, productive one often comes down to two things: starting accuracy and control during depth. The 130° point of this Dormer Pramet bit minimizes wandering at the entry, helping you locate the pilot hole with confidence. The bright finish reduces material sticking to the edge, which can otherwise slow you down or contaminate the cutting edge with built-up chips.

The parabolic flute design is a standout for deep-hole tasks. Instead of repeatedly pecking and pulling the bit out to clear chips, this design maintains efficient chip evacuation and steady cutting action as you drill deeper. For long-reach drilling needs—think drilled passages, threaded holes in thick plates, or components with recessed features—the extra-long length keeps the bit rigid and centered, reducing the risk of deflection and chatter compared with shorter drills.

HSS-E is a trusted choice when you’re drilling mixed materials or encountering heat buildup. This makes the A978 suitable for steel, stainless steel, and aluminum workpieces, giving you a single drill you can reach for across common shop tasks without compromising performance. The straight shank ensures compatibility with standard chucks and collets, delivering predictable runout and stable guidance during operation.

Practical use cases and optimization tips

• use conservative feeds and steady, even pressure to maintain a precise entry and minimize bit deflection. Allow the flute design to carry the chip efficiently for clean bore walls.
• benefit from the bright finish to reduce built-up edge and drag; a light lubrication can extend tool life without compromising surface finish.
• keep the drill clean and free from chips between holes; unused drills should be stored properly to prevent corrosion on the bright finish.
• when drilling very deep holes, plan your setup to minimize re-clamping. The extra-long length reduces the need for extensions, saving time and reducing potential runout issues.

What you get with this Dormer Pramet A978 drill is a reliable, purpose-built solution for deep-hole work that doesn’t require swapping between multiple tools. It’s ideal for shop floors, job shops, and production environments where depth, precision, and versatility matter. The 9.50 mm diameter is a practical choice for standardized hole sizing while the extra length opens up possibilities for challenging assemblies and tight spaces.