Dormer G136 HSS Straight Shank Countersink 90º 16.50mm | G13616.5

Dormer G13616.5 90° HSS Straight Shank Countersink Bit (16.50mm)

The Dormer G13616.5 countersink bit is an HSS straight shank countersink designed for producing clean 90° countersinks and fast deburring in a wide range of materials. It’s a practical choice for engineers, fabricators and maintenance teams who need a neat, consistent finish for countersunk fixings and chamfering work.

Part of Dormer’s G136 range, this 16.50mm countersink is suited to drill presses and hand-held drilling set-ups where a straight shank tool is required. The G13616.5 provides a controlled cutting action for accurate seating of countersunk screw heads and tidy edge breaks.

Key Features

• 90° included angle: Produces a conical seat suited to common countersunk screw head profiles and clean chamfering.
• HSS cutting tool: Offers durable, general-purpose performance for workshop and site drilling tasks.
• Straight shank design: Compatible with standard drill chucks and collet set-ups that accept straight shank tooling.
• Deburring capability: Helps remove sharp edges and improve finish around drilled holes.
• Single-piece size selection: Ideal when you need one dedicated diameter for repeat jobs and consistent results.

Specifications at a glance

Suitable applications

• Creating 90° countersinks for neat seating of countersunk screws.
• Deburring and edge chamfering around drilled holes.
• General workshop, maintenance and fabrication drilling tasks across a range of materials.