RUKO KES-DIN335-HSS-TiAlN 90° Countersink Bit, 28.0 mm Cutting Diameter, 12.0 mm Shank, TiAlN Coated

Precision-ground 90° countersink with a 28.0 mm cutting diameter and TiAlN coating for extended tool life in demanding materials.

Overview

The RUKO KES-DIN335-HSS-TiAlN-90°-Ø28,0mm is a high-performance countersink bit engineered for clean, chatter-free countersinking, deburring, and chamfering. It features a 90° cutting angle conforming to DIN 335 Form C, a cylindrical shank with 12.0 mm diameter, and three cutting flutes for smooth chip evacuation. The TiAlN (Titanium Aluminum Nitride) coating provides high hardness and oxidation resistance, enabling use on steel, stainless steel, cast iron, non-ferrous metals, and plastics. Overall length is 71 mm with a 16 mm flute length. Right-hand cut, external coolant supply. Part of the K-Line series.

What stands out

• TiAlN coating for high heat resistance and extended tool life
• 3-flute design for smooth cutting and excellent surface finish
• DIN 335 Form C geometry ensures accurate 90° countersinks
• Ground from high-speed steel (HSS) for durability
• Versatile across steel, stainless steel, cast iron, non-ferrous metals, and plastics

Technical details

• Tool type: Countersink bit
• Standard: DIN 335 Form C
• Cutting angle: 90°
• Cutting diameter (d1): 28.0 mm
• Shank diameter (d2): 12.0 mm
• Overall length (L1): 71 mm
• Flute length (L2): 16 mm
• Number of flutes: 3
• Material: High-speed steel (HSS)
• Coating: TiAlN (Titanium Aluminum Nitride)
• Shank type: Cylindrical
• Direction of cut: Right-hand
• Coolant supply: External
• Manufacturing process: Ground
• Series: K-Line

Our verdict

A professional-grade countersink that delivers precision and longevity, especially in stainless steel and other tough alloys.