RUKO KES-DIN335-HSS-TiN 90° Countersink Bit 8.3mm

Creating clean, precise conical recesses for screw heads in metal and plastic often requires a tool that resists wear and maintains sharpness. The RUKO KES-DIN335-HSS-TiN 90° Countersink Bit with 8.3 mm nominal diameter addresses this need with a titanium nitride coated high-speed steel body, offering enhanced durability and efficient chip evacuation.

Who is it for

This countersink bit is suitable for machinists, metalworkers, and DIY enthusiasts who need to deburr, chamfer, or countersink holes in materials such as steel, cast iron, non-ferrous metals, and plastics. It is designed for use with standard drill chucks accepting a 6 mm cylindrical shank.

Main features

• 90° cutting angle for standard countersunk screw heads
• TiN coating for increased wear resistance and longer tool life
• Three-flute design for smooth cutting and efficient chip removal
• Precision ground from high-speed steel for consistent performance
• DIN 335 C geometry for reliable countersinking

Specifications

• Tool Type: Countersink
• Standard: DIN 335 C
• Cutting Angle: 90°
• Material: High-Speed Steel (HSS)
• Coating: Titanium Nitride (TiN)
• Nominal Diameter (d1): 8.3 mm
• Shank Diameter (d2): 6 mm
• Overall Length (l1): 45 mm
• Number of Flutes: 3
• Cutting Direction: Right-hand cut
• Point Type: Conical

Tips

Use appropriate cutting speeds for the material being worked and apply a suitable cutting fluid when countersinking steel to prolong tool life. Ensure the workpiece is securely clamped before operation.