RUKO DIN 338 τρυπάνι HSS-Co 7,75 mm

Twist drill bit with 7.75 mm diameter, manufactured from high-speed steel with 5% cobalt for high heat resistance and wear resistance. Fully ground with a split point for precise centering and reduced thrust.

Advantages

High-performance HSS-Co material withstands high temperatures, making it suitable for demanding drilling tasks in tough materials. The split point design ensures accurate starting without wandering, while the bright finish reduces friction and improves chip evacuation.

Suitable for

• Alloyed and unalloyed steel
• Stainless steel
• Cast iron
• Non-ferrous metals
• Plastics

Key specifications

• Diameter: 7.75 mm
• Overall length: 117 mm
• Flute length: 75 mm
• Point angle: 135°
• Shank type: Cylindrical
• Cutting direction: Right-hand
• Tolerance: h8
• Standard: DIN 338

Recommendations

Use with appropriate cutting fluid for stainless steel and alloyed steel to extend tool life. Suitable for industrial and professional applications.