Twist Drill Bit Bosch HSS Cobalt 6.5 mm 1 pc

Twist Drill Bit Bosch HSS Cobalt 6.5 mm is a high-speed steel (HSS) drill bit with cobalt content, manufactured to DIN 338 specifications. The bit has a cylindrical shank equal to the drill diameter and a 135° split-point tip for precise centring and active cutting. It is suitable for alloyed and non-alloyed steel, stainless steel, cast iron, cast steel and acid- and heat-resistant steels and is intended for use in drill stands and drill drivers.

Advantages

This HSS Cobalt twist drill bit offers long lifetime when drilling stainless steel due to its cobalt-enhanced HSS material. The two cutters and two flutes remove chips efficiently, reducing wear and extending tool life. Manufactured to DIN 338 with diameter tolerance h8 and a Type N flute angle, the bit provides consistent geometry and reliable performance during repeated use.

Suitable for

• Drilling stainless steel
• Drilling alloyed and non-alloyed steel
• Drilling cast iron and cast steel
• Drilling acid- and heat-resistant steels
• Use with drill stands and drill drivers

Key specifications

• Brand: Bosch
• Type: HSS Cobalt twist drill bit
• Diameter: 6.5 mm
• Tip angle: 135° split-point
• Flute type: Type N (DIN 338)
• Diameter tolerance: h8
• Shank: cylindrical, equal to drill diameter
• Quantity: 1 pc
• MPN: 2608585856
• EAN: 3165140520911

How to use

Clamp the 6.5 mm Bosch HSS Cobalt drill bit securely in the chuck of a drill driver or drill stand. Select an appropriate spindle speed and feed rate for the material to be drilled — lower speeds for stainless and heat-resistant steels. Use cutting fluid when drilling steel and stainless steel to reduce heat and prolong bit life. Start drilling with light pressure to engage the split-point tip for accurate centring, then apply steady pressure until the hole is complete.

Recommendations

For best results when drilling stainless and acid-resistant steels, use a cutting fluid, keep speeds moderate, and avoid overheating by withdrawing the bit occasionally to clear chips. Replace the bit when wear affects the split-point geometry to maintain centring and cutting performance.