RUKO KES-DIN335-HSS 90° Countersink Bit Ø25.0 mm, 10 mm Shank, 3-Flute

Precision-ground 25.0 mm HSS countersink with 90° cutting angle and 3 flutes for clean chamfering in steel, cast iron, non-ferrous metals and plastics.

Overview

The RUKO KES-DIN335-HSS is a high-speed steel countersink bit conforming to DIN 335 Form C. Its 90° conical tip and 25.0 mm cutting diameter make it suitable for countersinking, deburring and chamfering operations. The cylindrical shank has a diameter of 10 mm with h8 tolerance, ensuring secure clamping in standard drill chucks. The tool is uncoated with a bright finish and features a right-hand cutting direction.

What stands out

• DIN 335 Form C compliance for standard countersink geometry
• 3 precision-ground flutes for smooth cutting action
• HSS construction for durability across common materials
• 90° angle matches standard flat-head screws

Technical details

• Tool Type: Countersink
• Material: High-Speed Steel (HSS)
• Standard: DIN 335 Form C
• Cutting Angle: 90°
• Cutting Diameter (D1): 25.0 mm
• Shank Type: Cylindrical Shank
• Shank Diameter (D2): 10 mm
• Overall Length (L1): 67 mm
• Number of Flutes: 3
• Coating: Uncoated (Bright Finish)
• Application: Countersinking, Deburring, Chamfering
• Suitable Materials: Steel, Cast Iron, Non-Ferrous Metals, Plastics
• Manufacturing Process: Precision Ground
• Cutting Direction: Right-Hand Cut
• Tolerance (Shank): h8
• Tip Geometry: Conical

Our verdict

A reliable countersink bit for professionals needing consistent 90° chamfers in a range of materials.