RUKO Countersink DIN 335 C HSS-E 90° Ø10.4 mm, Shank 6 mm

Precision-ground 90° countersink with 10.4 mm cutting diameter, made from HSS-E high-speed steel with 5% cobalt for long tool life in demanding materials.

Overview

The RUKO KES-DIN335-HSS-90°-Ø10,4mm is a three-flute countersink conforming to DIN 335 C. It features a cylindrical shank with 6 mm diameter and h8 tolerance, and an overall length of 50 mm. The bright, uncoated finish and fully ground construction ensure accurate, chatter-free countersinking, deburring, and chamfering.

What stands out

• 90° cutting angle for standard countersunk screws
• HSS-E with 5% cobalt for high heat resistance and durability
• Three flutes for smooth cutting and good chip evacuation
• Suitable for steel, cast iron, non-ferrous metals, and plastics
• Right-hand cutting direction

Technical details

• Tool type: Countersink
• Standard: DIN 335 C
• Material: HSS-E (High-Speed Steel with Cobalt)
• Cobalt content: 5%
• Cutting angle: 90°
• Cutting diameter (d1): 10.4 mm
• Shank type: Cylindrical shank
• Shank diameter (d2): 6 mm
• Overall length (l1): 50 mm
• Number of flutes: 3
• Surface finish: Bright (uncoated)
• Manufacturing process: Fully ground
• Direction of cut: Right-hand
• Tolerance: h8
• Recommended for materials: Steel, cast iron, non-ferrous metals, plastics
• Application: Countersinking, deburring, chamfering
• Series: 335

Our verdict

A professional-grade countersink that delivers clean, precise results in a wide range of materials, backed by RUKO's German engineering.