RUKO KES-Bit HSS 90° Countersink Bit, Ø12.4mm, 8mm Shank, DIN 335 C

Featuring a 90° cutting angle and a maximum cutting diameter of 12.4 mm, this RUKO countersink bit delivers precise chamfers and deburring in steel, cast iron, non-ferrous metals, and plastics. The high-speed steel body with three flutes ensures clean, chatter-free results.

Overview

The RUKO KES-Bit HSS 90° countersink bit is engineered for creating accurate 90° countersinks for flat-head screws. Its cylindrical 8 mm shank fits standard drill chucks, making it compatible with both drill presses and hand drills. The bright, uncoated finish provides a smooth cutting action and easy chip evacuation.

What stands out

• Three-flute design for smooth, vibration-free countersinking
• High-speed steel construction for durability and long life
• 90° cutting angle matches standard flat-head screw heads
• DIN 335 C compliance ensures consistent geometry
• Versatile across steel, cast iron, non-ferrous metals, and plastics

Technical details

• Tool type: Countersink bit
• Material: High-speed steel (HSS)
• Cutting angle: 90°
• Max cutting diameter: 12.4 mm
• Shank diameter: 8 mm
• Overall length: 56 mm
• Number of flutes: 3
• Standard: DIN 335 C
• Coating: Bright (uncoated)
• Shank type: Cylindrical
• Direction of cut: Right-hand
• Application: Countersinking, deburring, chamfering
• Recommended materials: Steel, cast iron, non-ferrous metals, plastics
• Compatibility: Drill presses, hand drills (with appropriate chuck)
• Packaging quantity: 1 piece

Our verdict

A reliable, DIN-compliant countersink bit that delivers clean 90° chamfers in a wide range of materials. The three-flute HSS design ensures smooth operation and long service life.