RUKO SPB-DIN338-31/64-HSSCo HSS-Co5 Twist Drill Bit, 31/64 inch (12.3 mm), DIN 338, Split Point 135°

This RUKO twist drill bit stands out with its 5% cobalt alloyed high-speed steel, delivering superior heat resistance and durability for demanding drilling tasks. Its split point geometry and 135° point angle provide precise centering and reduced thrust, making it ideal for tough materials like stainless steel and cast iron.

Highlights

• HSS-Co5 cobalt alloy for high heat resistance
• Split point (cross-ground) for accurate starting without center punch
• 135° point angle for efficient cutting in hard materials
• Ground from solid for consistent quality and performance
• Right-hand cutting with cylindrical shank per DIN 338

In daily use

Whether you're working with alloyed steel, stainless steel, or heat-resistant alloys, this drill bit maintains its edge and resists wear. The bright finish reduces friction and improves chip evacuation, while the high core strength prevents breakage under heavy loads. Suitable for use in machine tools and hand drills with proper clamping.

Full specifications

• Drill bit type: Twist drill bit
• Material: High-speed steel with 5% cobalt (HSS-Co5)
• Standard: DIN 338
• Diameter: 31/64 inch (12.3 mm)
• Shank type: Cylindrical
• Point angle: 135°
• Point grind: Split point (cross-ground)
• Surface finish: Bright
• Flute type: Right-hand cutting spiral flute
• Tolerance: h8
• Total length: 151 mm
• Working length (flute length): 101 mm
• Manufacturing process: Ground from solid
• Application suitability: Alloyed and unalloyed steel, stainless steel, acid-resistant steel, heat-resistant steel, cast iron, non-ferrous metals, plastics
• Cutting direction: Right-hand
• Core strength: High

Final note

Engineered for professionals who demand precision and longevity in challenging drilling operations.