RUKO SPB-DIN338-1/2-HSSCo 12,7 mm cobalt spiraalboor

Precision-ground from solid HSS-Co with 5% cobalt, this twist drill bit maintains hardness even at high temperatures, making it ideal for stainless and acid-resistant steels.

Overview

The RUKO SPB-DIN338-1/2-HSSCo is a high-performance twist drill bit manufactured to DIN 338 standards. Its 135° split point ensures accurate self-centering and reduces walking, while the bright finish and h8 shank tolerance provide reliable chucking and smooth chip evacuation.

What stands out

• 5% cobalt alloyed high-speed steel for excellent heat resistance and durability.
• Split point geometry for precise starting without centre punching.
• Ground from solid for superior concentricity and cutting performance.
• Suitable for stainless steel, acid-resistant steel, heat-resistant steel, high-alloy steels, cast iron, and non-ferrous metals.

Technical details

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (5% cobalt)
• Diameter: 1/2 inch (12.7 mm)
• Shank type: Cylindrical
• Point angle: 135°
• Point type: Split point
• Surface finish: Bright
• Manufacturing process: Ground from solid
• Tolerance: h8
• Cutting direction: Right-hand cutting
• Overall length: 151 mm
• Working length: 101 mm

Our verdict

A professional-grade cobalt drill bit that delivers precision and longevity in tough materials, backed by RUKO's German engineering.