Robert Charles Single Flute Countersink 90° - M35-HSS-E 5% Cobalt - Metric - 14.0mm Head Dia

The Robert Charles Single Flute Countersink 90° is a precision cutting tool engineered for accurate countersinking, chamfering, and deburring of metric holes. It’s ideal for engineers, machinists, and hobbyists who need reliable, repeatable results on a range of materials—from stainless steel to non‑ferrous metals. With a 14.0 mm head diameter, it provides a dependable starting point for common metric hole sizes and delivers clean, flat entry surfaces in a single pass.

Crafted from premium M35 HSS-E with 5% cobalt, this countersink delivers superior heat resistance and edge retention compared with standard high-speed steel. The cobalt-rich composition helps maintain sharpness under demanding cutting conditions, extending tool life and reducing downtime when working tough materials such as stainless steel and alloy steels.

• 14.0 mm Head Diameter: Provides a consistent countersink depth for metric holes, enabling uniform chamfers and reliable results across your project.
• M35 HSS-E with 5% Cobalt: Delivers enhanced hardness and heat resistance for longer life and better performance on tough materials.
• 90° Single-Flute Geometry: Ensures clean, precise countersinks with smooth chip evacuation and minimal chatter for a professional finish.

This countersink helps you move faster with predictable, high-quality results—from first part to last. Its robust construction and sharp cutting edge support efficient workflows, reduced rework, and consistently professional finishes on metric holes.