RUKO Countersink Bit DIN 335 C HSS TiAlN 90° 10.0 mm

Machinists and metalworkers needing clean, precise chamfers on steel or stainless steel will appreciate the RUKO countersink bit. With a 10.0 mm cutting diameter and a 90° cutting angle, it produces accurate countersinks for screws and deburrs edges in a single pass. The TiAlN coating on high-speed steel provides high wear resistance and heat resistance, making it suitable for dry machining of harder materials.

Key specifications

• Tool Type: Countersink
• Standard: DIN 335 C
• Material: High-Speed Steel (HSS)
• Coating: Titanium Aluminum Nitride (TiAlN)
• Cutting Angle: 90°
• Cutting Diameter (D1): 10.0 mm
• Shank Diameter (D2): 6 mm
• Overall Length (L1): 45 mm
• Number of Cutting Edges: 3
• Shank Type: Cylindrical
• Cutting Direction: Right-hand cut
• Manufacturing Method: Ground profile

Why choose it

The TiAlN coating delivers very high wear resistance and high heat resistance, extending tool life and allowing dry machining. The three cutting edges ensure smooth, chatter-free countersinking, while the DIN 335 C geometry provides a standard 90° angle for common screw heads.

Ideal use cases

• Countersinking holes for flat-head screws in steel and stainless steel
• Deburring drilled holes in cast iron and non-ferrous metals
• Chamfering edges on plastic components

Good to know

Suitable for universal application, especially for harder materials. The cylindrical shank fits standard drill chucks. For best results, use with a suitable cutting fluid or dry as recommended.