Dormer Pramet A125 1/16 Inch x 125 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

When you need to reach deep into metal with precision and reliability, the Dormer Pramet A125 drill bit is built for the task. This 1/16 inch diameter, 125 mm length HSS straight shank drill bit is designed for deep-hole drilling and challenging workholding scenarios, where long reach and consistent performance matter most.

Key features that matter in daily metalworking

• 118-degree conventional point — a robust, easy-to-regrind tip that centers cleanly and maintains its cutting geometry through repeated use.
• Steam oxide finish — reduces material sticking to the edge, minimizing built-up edge and promoting smoother drilling progression.
• Extra long length series — specifically designed for drilling very deep holes and applications where extended reach is required, without sacrificing rigidity.
• Premium HSS material — versatile enough to drill a wide range of metals, including steel, aluminium, and stainless steel, making it a dependable choice in mixed-material projects.
• Straight shank — provides stable alignment in standard drill chucks and fixtures, supporting precise hole placement in demanding jobs.
• Versatile, all-purpose performance — a practical one-bit solution for workshops, fabrication shops, and maintenance tasks that demand reliability across multiple machines and setups.

Practical use cases

• Deep-hole drilling in steel components, automotive brackets, and structural metalwork where standard-length bits can’t reach.
• Prototyping and fabrication tasks that require exact hole depth and clean chamfers without frequent bit changes.
• Maintenance and repair work on machinery where deep access is needed to fastenings or passages.
• Projects involving aluminum and stainless steel, where material behavior benefits from the steam oxide finish for smoother chip evacuation.

Why this Dormer Pramet drill stands out

Rather than simply listing features, this A125 drill bit delivers tangible outcomes: dependable hole accuracy at depth, easier regrinding to extend service life, and broad material compatibility so you can rely on a single drill bit for diverse jobs. The combination of a precise 118-degree point, robust HSS composition, and an extended reach makes it a practical upgrade for anyone who regularly encounters deep drilling tasks or mixed-material projects.

Care, maintenance and tips for best results

• Keep feeds steady and avoid forcing the bit — let the sharp point and flute design do the work.
• Use appropriate cutting fluid or lubrication to reduce heat build-up, especially on stainless steel or thicker sections.
• Inspect the edge after heavy usage; a quick touch-up regrind can restore performance and extend life.
• Match the drilling speed to the material: slower speeds for harder metals, moderate speeds for aluminum for smoother chip evacuation.