RUKO SPB-DIN338 11.9mm HSS-Co Twist Drill Bit

This RUKO twist drill bit is engineered for demanding drilling tasks in tough and hard materials. Its 5% cobalt alloyed high-speed steel construction delivers superior heat resistance and durability, making it a reliable choice for stainless steel, alloyed steel, and cast iron. The split point tip ensures precise self-centering, reducing walking and eliminating the need for center punching in many applications.

Highlights

• 5% cobalt HSS-Co for high heat resistance and long life
• 135° split point for accurate starting without a center punch
• Fully ground flutes for smooth chip evacuation
• DIN 338 standard dimensions with h8 shank tolerance
• Bright finish for corrosion resistance

In daily use

The 11.9 mm diameter and 142 mm overall length make this bit suitable for general purpose drilling in metalworking, maintenance, and fabrication. The cylindrical shank fits standard drill chucks, and the right-hand cutting direction is standard for most drilling machines. With a working length of 101 mm, it provides ample depth for most through-hole and blind-hole operations.

Full specifications

• Drill bit type: Twist drill bit
• Material: High-speed steel with 5% cobalt (HSS-Co)
• Standard: DIN 338
• Diameter: 11.9 mm
• Shank type: Cylindrical
• Shank diameter: 11.9 mm
• Point angle: 135°
• Point type: Split point
• Cutting direction: Right-hand
• Overall length: 142 mm
• Working length: 101 mm
• Surface finish: Bright
• Tolerance: h8
• Recommended materials: Alloyed/unalloyed steel, stainless steel, cast iron, non-ferrous metals
• Max tensile strength: 1100 N/mm²

Final note

RUKO's precision grinding ensures consistent performance and dimensional accuracy, making this drill bit a dependable addition to any professional toolkit.