RUKO SPB-DIN338 7,0mm HSS-Co kierteityspora

For machinists and metalworking professionals, the RUKO SPB-DIN338 7.0mm HSS-Co twist drill bit delivers reliable performance in demanding drilling tasks. Manufactured to DIN 338 standards, this bit is ground from solid high-speed steel with 5% cobalt, ensuring high heat and wear resistance. The 135° split point provides accurate centering and reduces walking, while the bright ground finish promotes efficient chip evacuation. Suitable for alloyed and unalloyed steel, stainless steel, cast iron, and non-ferrous metals up to 1100 N/mm².

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (5% cobalt)
• Diameter: 7.0 mm
• Total length: 109 mm
• Working length: 69 mm
• Shank type: Cylindrical, 7.0 mm diameter
• Point angle: 135°
• Point grind: Split point
• Surface finish: Bright / ground
• Cutting direction: Right-hand
• Tolerance: h8

Why choose it

The cobalt alloyed HSS provides superior hardness and heat resistance, allowing higher cutting speeds and longer tool life compared to standard HSS bits. The split point geometry ensures precise starts without center punching, while the ground flutes promote smooth chip flow and reduced friction.

Ideal use cases

• Drilling stainless steel and high-strength alloys
• Production and maintenance in metalworking shops
• Precision drilling in cast iron and non-ferrous metals
• General industrial and professional applications

Good to know

Compliant with DIN 338 dimensional standards, this bit fits standard drill chucks and is suitable for use in stationary drilling machines and hand drills. The bright finish allows for easy inspection of cutting edges.