RUKO KES-DIN335-HSS-TiN-90°-12.4mm Countersink Bit

Deburring and chamfering holes in metal and plastic can be time-consuming and leave rough edges. The RUKO KES-DIN335-HSS-TiN-90°-12.4mm countersink bit solves this by producing clean, precise 90° chamfers in a single pass. Its 3-flute design and TiN coating reduce friction and heat, extending tool life and improving surface finish.

Who is it for

Machinists, metalworkers, and maintenance technicians who need a reliable countersink for steel, cast iron, non-ferrous metals, and plastics. Suitable for use in drill presses, milling machines, or hand drills with a cylindrical shank.

Main features

• 90° cutting angle for standard countersunk screws
• High-speed steel (HSS) with titanium nitride (TiN) coating for wear resistance
• 3 flutes for smooth cutting and efficient chip removal
• Cylindrical shank, 8 mm diameter, h8 tolerance for secure chucking
• Ground from solid for consistent geometry

Specifications

• Cutting diameter: 12.4 mm
• Shank diameter: 8 mm
• Overall length: 56 mm
• Flute length: 10 mm
• Number of flutes: 3
• Cutting direction: right-hand
• Standard: DIN 335 C
• Material: HSS
• Coating: TiN
• Recommended for: steel, cast iron, non-ferrous metals, plastics

Tips

Use cutting oil when working with steel to extend tool life. Ensure the workpiece is securely clamped to avoid chatter. For best results, run at moderate speeds appropriate for the material.