Dormer G136 HSS Straight Shank Countersink 90º 25.00mm | G13625.0

Dormer G13625.0 HSS Straight Shank Countersink Bit, 90° – 25.00mm

Dormer G13625.0 is a 90° HSS straight shank countersink bit designed for producing clean, consistent countersinks and chamfers, with the added benefit of quick deburring around drilled holes. Ideal for engineers, fabricators and maintenance teams, it helps create a neat conical seat for countersunk fasteners and improves finished-edge quality.

This G136 series countersink is a practical choice for workshop and site drilling setups where a cylindrical 10mm shank is required for secure chucking in compatible drills and drill presses.

Key Features

• 90° countersink angle: Produces a conical seat suitable for common metric countersunk-head screw applications.
• HSS cutting tool: Built for reliable metalworking performance in general machining tasks.
• 3-flute design: Supports stable cutting action for controlled countersinking and chamfering.
• Straight shank (10mm): Compatible with standard drill chucks that accept cylindrical shanks for secure grip.
• Multi-purpose use: Suitable for countersinking, chamfering and deburring edges around holes.
• Bright finish: Standard bright finish suited to general workshop use.

Specifications at a glance

Suitable applications

• Countersinking and chamfering drilled holes for countersunk-head fasteners
• Deburring and edge finishing in metalworking and general engineering
• Use in drills and drill presses that accept a 10mm straight shank