RUKO KES-DIN335-HSS-90°-Ø16.5mm Countersink, HSS, 90°, 16.5 mm

Machinists and metalworkers use the RUKO KES-DIN335-HSS-90°-Ø16.5mm countersink to create precise 90° chamfers and deburr holes in steel, cast iron, non-ferrous metals, and plastics. Its 16.5 mm working diameter suits standard countersunk screw sizes, and the three-flute design ensures smooth cutting.

Key specifications

• Tool type: Countersink
• Standard: DIN 335 C
• Material: High-Speed Steel (HSS)
• Cutting angle: 90°
• Working diameter: 16.5 mm
• Shank type: Cylindrical shank
• Shank diameter: 10 mm
• Number of flutes: 3
• Overall length: 63 mm
• Coating: Uncoated
• Application: Deburring, chamfering, countersinking
• Suitable materials: Steel, cast iron, non-ferrous metals, plastics
• Manufacturing process: Ground
• Direction of cut: Right-hand
• Packaging quantity: 1 piece

Why choose it

Ground from high-speed steel, this countersink offers clean cutting edges and long service life. The 90° angle matches common countersunk screw heads, ensuring flush seating. Its cylindrical shank fits standard drill chucks.

Ideal use cases

• Deburring drilled holes in metalworking shops
• Chamfering edges before tapping or assembly
• Countersinking for flat-head screws in machinery and fabrication

Good to know

DIN 335 C defines the geometry for 90° countersinks with three flutes. Use with appropriate cutting fluid for best results in steel.