RUKO SPB-DIN338-HSSCo8-Ø8,7mm HSS-Co 8% spiraalboor

This RUKO twist drill bit stands out with its 8% cobalt alloyed high-speed steel, delivering exceptional heat and wear resistance for demanding metalworking tasks. The fully ground split point and 135° point angle ensure precise centering and reduced thrust, making it a reliable choice for stainless and high-alloy steels.

Highlights

• HSS-Co 8% cobalt alloy for very high heat resistance
• Split point with 135° angle for accurate starts
• Fully ground flutes for excellent chip removal
• DIN 338 standard dimensions and h8 shank tolerance
• Suitable for stainless steel, high-alloy steels, cast iron, acid-resistant and heat-resistant steels

In daily use

With a diameter of 8.7 mm, an overall length of 125 mm and a flute length of 81 mm, this drill bit fits standard drill chucks and provides stable, chatter-free drilling. The bright finish reduces friction and improves chip flow, while the right-hand cutting direction suits conventional drilling operations.

Full specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co 8% (high-speed steel with 8% cobalt)
• Diameter: 8.7 mm
• Shank type: Cylindrical
• Point angle: 135°
• Drill point: Split point
• Surface treatment: Bright finish
• Manufacturing process: Fully ground
• Tolerance: h8
• Overall length: 125 mm
• Flute length: 81 mm
• Cutting direction: Right-hand cut
• Recommended applications: Stainless steel, high-alloy steels, cast iron, acid-resistant steels, heat-resistant steels
• Heat resistance: Very high
• Wear resistance: Very high
• Core strength: High
• Chip removal: Excellent

Final note

Engineered for professionals who demand precision and longevity in tough materials, this RUKO drill bit delivers consistent performance hole after hole.