RUKO KEB-HSSCo-Mod.30-33.0mm Twist Drill Bit, HSS-Co5, DIN 338, 33.0 mm

For machinists and metalworking professionals drilling large-diameter holes in tough materials, the RUKO KEB-HSSCo-Mod.30-33.0mm twist drill bit delivers reliable performance. Its 33.0 mm cutting diameter and HSS-Co5 cobalt alloy handle alloyed and unalloyed steel, stainless steel, cast iron, and non-ferrous metals with ease.

Key specifications

• Drill bit type: Twist drill bit
• Cutting diameter: 33.0 mm
• Material: HSS-Co5 (5% cobalt high-speed steel)
• Standard: DIN 338
• Point angle: 135°
• Shank type: Cylindrical shank
• Total length: 370 mm
• Flute length: 220 mm
• Tolerance: h8
• Surface finish: Bright
• Helix angle: Type N
• Manufacturing process: Ground from solid
• Application: Drilling in alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals
• Recommended material hardness: Up to 1000 N/mm²

Why choose it

The 5% cobalt content provides excellent heat resistance and extended tool life, while the 135° split point reduces walking and improves centering. Ground from solid for high precision and chip removal.

Ideal use cases

• Drilling large holes in steel plates and structural components
• Maintenance and repair in industrial settings
• Fabrication of stainless steel equipment

Good to know

Part of the RUKO Mod. 30 series, this drill bit is designed for demanding drilling tasks where accuracy and durability are critical.