RUKO SPB-DIN338-TypUNI-HSSCo-3,30-SB Twist Drill Bit 3.3 mm DIN 338 HSS-Co

The RUKO SPB-DIN338-TypUNI-HSSCo-3,30-SB twist drill bit is engineered for high-performance drilling in tough materials. Its 5% cobalt alloyed high-speed steel construction provides excellent heat resistance and durability, making it suitable for stainless steel, alloyed steel, and cast iron. The 135° split point tip ensures self-centering and reduces walking, while the bright finish offers corrosion resistance. Compliant with DIN 338, this drill bit delivers precise holes with a diameter of 3.3 mm and a working length of 39 mm, ideal for hand drills and pillar drills.

Highlights

• HSS-Co material with 5% cobalt for superior hardness and heat resistance
• 135° split point for self-centering and reduced thrust
• DIN 338 standard ensures consistent geometry and performance
• Suitable for stainless steel, alloyed steel, and cast iron up to 1100 N/mm²
• Bright finish for corrosion resistance and smooth chip evacuation

In daily use

This twist drill bit excels in demanding drilling tasks where standard HSS bits fail. The cobalt alloy maintains hardness at high temperatures, allowing faster cutting speeds and longer tool life. The split point design eliminates the need for center punching and provides accurate hole positioning. Use it with cutting fluid for optimal results in tough materials.

Full specifications

• Drill Bit Type: Twist Drill Bit
• Standard: DIN 338
• Material: HSS-Co (High-Speed Steel with 5% Cobalt)
• Diameter: 3.3 mm
• Shank Type: Cylindrical
• Point Angle: 135°
• Point Grind: Split Point (Self-Centering)
• Flute Type: Right-hand cutting
• Surface Finish: Bright
• Overall Length: 70 mm
• Working Length (Flute Length): 39 mm
• Tolerance: h8
• Application Material (Primary): Stainless Steel, Alloyed Steel, Cast Iron
• Application Material (Secondary): Unalloyed Steel, Non-ferrous Metals, Plastics
• Tensile Strength Compatibility: Up to 1100 N/mm²
• Packaging Quantity: 1 piece
• Recommended Machine Type: Hand drills, Pillar drills
• Cooling Requirement: Recommended for optimal performance

Final note

For precision drilling in hard-to-machine materials, the RUKO SPB-DIN338-TypUNI-HSSCo-3,30-SB delivers reliable performance and long service life.