RUKO SPB-DIN338-11,7mm-HSSCo broca helicoidal

Drilling tough materials like stainless steel or alloyed steel demands a drill bit that resists heat and wear. The RUKO SPB-DIN338-11.7mm-HSSCo twist drill bit is made from high-speed steel with 5% cobalt, providing high heat resistance and wear resistance for demanding jobs. Its split point design reduces wandering and allows precise starting without a center punch.

Who is it for

Professional machinists, metalworkers, and serious DIYers who regularly drill into hard metals and need a reliable, long-lasting drill bit.

Main features

• Diameter: 11.7 mm
• Material: HSS-Co (high-speed steel with 5% cobalt)
• DIN 338 standard
• Split point (cross-ground) for accurate centering
• Point angle: 130°
• Fully ground, bright finish
• Right-hand cutting direction
• Shank type: cylindrical (straight)
• Tolerance: h8

Specifications

• Overall length: 146 mm
• Working length (flute length): 101 mm
• Recommended materials: alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals, plastics

Tips

Use cutting fluid when drilling stainless steel to extend tool life. Ensure the drill is securely chucked and the workpiece is clamped to avoid vibration.