RUKO DOB-HSS-5,1mm spiraalboor blank DIN 338

For machinists and metalworkers who need clean, accurate holes in tough materials, the RUKO DOB-HSS-5.1mm bright twist drill bit delivers reliable performance. Ground from high-speed steel to DIN 338, it handles steel, cast iron, non-ferrous metals, and plastics with a 118° conical point and right-hand cut.

Key specifications

• Diameter: 5.1 mm
• Overall length: 86 mm
• Flute length: 52 mm
• Material: High-speed steel (HSS)
• Surface finish: Bright (uncoated)
• Shank: Cylindrical, h8 tolerance
• Point angle: 118°
• Cutting direction: Right-hand
• Number of flutes: 2
• Standard: DIN 338

Why choose it

Ground flutes and a standard core thickness ensure consistent chip removal and centering, while the bright finish reduces friction in common materials.

Ideal use cases

• General-purpose drilling in steel and cast iron
• Maintenance and repair workshops
• Fabrication of non-ferrous metal components
• Plastic and light alloy drilling

Good to know

This drill bit is part of the RUKO A002 series and is manufactured with ground flutes for precision. It is supplied as a single piece.