RUKO DIN 335 C HSS 90° Countersink Bit 16.5 mm

Precision-ground 90° countersink in DIN 335 C geometry, made from high-speed steel for clean chamfering and deburring in steel, cast iron, non-ferrous metals and plastics.

Overview

The RUKO KES-DIN335-HSS-90°-Ø16,5mm is a cylindrical-shank countersink with a nominal diameter of 16.5 mm and a 10 mm shank. Its three-flute design and bright, uncoated finish provide reliable chip evacuation and a smooth cutting action across a wide range of materials.

What stands out

• 90° cutting angle for standard countersunk screw heads
• Ground profile from high-speed steel for durability
• Right-hand cut with three flutes for efficient material removal
• Bright finish reduces friction and resists build-up

Technical details

• Tool type: Countersink
• Standard: DIN 335 C
• Material: High-speed steel (HSS)
• Nominal diameter (D1): 16.5 mm
• Shank diameter (D2): 10 mm
• Total length (L1): 63 mm
• Number of flutes: 3
• Surface treatment: Bright (uncoated)
• Cutting direction: Right-hand
• Manufacturing method: Ground profile
• Application: Deburring, chamfering, countersinking
• Suitable for: Steel, cast iron, non-ferrous metals, plastics

Our verdict

A solid, no-frills countersink that delivers clean, accurate chamfers in everyday workshop materials. The DIN 335 C geometry and HSS construction make it a dependable choice for both occasional and frequent use.