Countersinks

Countersinks add the clean chamfer that makes fasteners seat properly and assemblies look finished. They’re a small step in hole making, but they have an outsized impact on fit, seating, and final appearance. Useful when you need neat edges, controlled deburring, and a professional finish.

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Taper Shank Countersink Series

Parallel Shank Countersink Series

Countersinking bits for clean hole preparation

Countersinking bits are used when a drilled hole needs a controlled angled opening for better fit and finishing. They help prepare the top edge of the hole so screws, bolts or fasteners can sit more neatly, while also supporting cleaner edges after drilling.

Drill bit countersink for metal applications

A drill bit countersink is useful in metalworking operations where hole preparation and finishing need to be done with accuracy. A countersink drill bit for metal helps maintain consistent seating depth and edge quality, making it suitable for workshop, maintenance and production environments.

Addison countersinks range

Addison offers HSS countersinks in taper shank and parallel shank series, manufactured to IS, DIN and BS standards. With White and TiN coating options, the range supports reliable countersinks for users who need dependable performance across industrial hole-making and finishing applications.