Dormer Pramet A125 3.00 mm x 200 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Meet the Dormer Pramet A125 3.00 mm x 200 mm HSS straight shank drill, a purpose-built solution for precision deep-hole work. This extra-long drill is designed to reach into recesses, pockets, and through thick materials with confidence, delivering clean, accurate holes every time. Built to perform across a range of metals, it’s the dependable choice for workshop and production environments demanding depth without compromise.

Why the A125 3.00 mm x 200 mm stands out

• 118° conventional point — a robust starting geometry that reduces wandering on contact, stabilizes entry, and is straightforward to re-sharpen when needed, preserving accuracy over many holes.
• Steam oxide finish — a smart coating that minimizes friction and galling, helping chips break away smoothly and reducing the tendency of workpiece material to cling to the cutting edge.
• Extra-long length (200 mm) — ideal for drilling very deep holes and for workpieces where increased reach is essential. This straight shank drill provides the leverage and clearance you need in long cavities, stepped surfaces, and deep pockets.
• Premium HSS material — high-speed steel engineered for durability and heat resistance, suitable for drilling a variety of metals including steel, aluminium, and stainless steel, while maintaining a sharp edge longer between regrinds.
• Straight shank — compatible with standard drill chucks on mills, drill presses, and many handheld setups, ensuring secure grip and consistent torque transfer.
• BS 328 compliant — built to reliable standards that ensure interchangeability and predictable performance across compatible tooling setups.

Practical use and optimization tips

For best results, pair the A125 3.00 mm drill with clean, steady feeds and appropriate cutting fluid to manage heat when drilling metals. Use a peck drilling technique: drill a short depth, withdraw to clear chips, then resume. This approach reduces chip clogging and extends tool life in deep-hole applications. Start with a light touch to establish a true entry point, then maintain a consistent speed to preserve the cutting edge. If re-sharpening is required, set the angle back to near the original 118° and restore the edge carefully to maintain the established drilling performance.

Who benefits most

Ideal for machine shops, fabricators, and maintenance teams that routinely drill deep holes in steel, stainless steel, and aluminum. It’s a dependable choice for instrument housings, automotive components, and structural work where depth and precision matter more than quick turnover. The A125’s combination of extra reach, robust point angle, and versatile material compatibility makes it a practical one-tool solution for many fabrication and repair tasks.

Maintenance and care

• Keep the drill sharp; a再 blunt edge compromises accuracy and increases heat buildup.
• Use proper lubrication to reduce friction and extend tool life during metal drilling.
• Avoid excessive feed pressure; let the bit do the cutting to minimize premature wear.

With the Dormer Pramet A125 3.00 mm x 200 mm HSS straight shank extra-long drill, you gain depth, precision, and reliability in every hole. Add it to your toolkit for consistently clean, accurate results on deep-hole projects.