Dormer Pramet A225 5/16 Inch x 3/4 Inch HSS BS 60 DEG CENTRE DRILL BS 328

The Dormer Pramet A225 center drill, 5/16 in diameter x 3/4 in length, is a precision HSS tool engineered to create accurate center holes in shafts for secure holding and precise alignment. It's a versatile choice for engineers, machinists, buyers, and hobbyists, usable on both CNC and conventional machines.

With a 120° pilot and a 60° conical tip, it starts holes cleanly and centers parts quickly, helping you achieve concentric, true-running setups with less rework.

• Double-ended design: Two drilling ends provide increased productivity and economy by extending tool life and reducing downtime for sharpening or replacements.
• 120° pilot with 60° cone: The 120-degree pilot and 60-degree conical tip deliver precise center holes for secure holding and accurate alignment in shafts.
• Premium HSS with bright finish: High-speed steel construction handles a wide range of materials—including steel, aluminium, and stainless steel—while the bright finish helps prevent sticking and built-up edge for cleaner starts.

By choosing the Dormer Pramet A225, you gain a dependable center drill that speeds up setup, reduces scrap and rework, and delivers repeatable results across CNC and conventional workflows. The dual ends mean less downtime swapping tools, while the HSS core maintains sharpness through demanding materials. For shops aiming for accurate centering and efficient production, this center drill offers a practical, economical solution that supports steady throughput and quality outcomes.