RUKO SPB-DIN338-HSSCo8-6.3mm HSS-Co8 Twist Drill Bit

Drilling into tough materials like stainless steel or high-alloy steels quickly dulls standard drill bits, causing frustration and wasted time. The RUKO SPB-DIN338-HSSCo8-6.3mm solves this with a cobalt-alloyed HSS-Co8 construction that maintains hardness even at high temperatures, ensuring clean, precise holes in demanding metalworking tasks.

Who is it for

This twist drill bit is ideal for professional machinists, metalworkers, and serious DIY enthusiasts who regularly work with hard-to-machine metals, including stainless steel, acid-resistant steel, heat-resistant steel, cast iron, bronze, and hard plastics.

Main features

• HSS-Co8 high-speed steel with 8% cobalt for superior heat and wear resistance
• DIN 338 standard with 135° split point for accurate self-centering and reduced walking
• Fully ground from solid with bright finish for smooth chip evacuation and precise holes
• Cylindrical shank with h8 tolerance for secure chuck grip
• Right-hand cutting direction for standard drilling applications

Specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co8 (8% cobalt)
• Diameter: 6.3 mm
• Shank type: Cylindrical
• Shank diameter: 6.3 mm
• Total length: 101 mm
• Working length: 63 mm
• Point angle: 135°
• Point type: Split point
• Surface finish: Bright
• Manufacturing process: Fully ground from solid
• Tolerance: h8
• Cutting direction: Right-hand
• Packaging quantity: 1 piece

Tips

Use cutting fluid or coolant when drilling stainless or heat-resistant steels to extend tool life and improve hole quality. Ensure the drill bit is securely chucked and run at appropriate speeds for the material being drilled.