RUKO SPB-DIN338-4.5mm-HSSCo Twist Drill Bit

Drilling into tough, hardened steels can quickly dull standard bits, causing frustration and wasted time. The RUKO SPB-DIN338-4.5mm-HSSCo twist drill bit is built to solve that problem, delivering reliable performance in demanding materials.

Who is it for

This bit is ideal for metalworkers, machinists, and serious DIYers who regularly drill alloyed or unalloyed steel, stainless steel, cast iron, non-ferrous metals, and plastics. If you need clean, accurate holes without constant bit changes, this is your tool.

Main features

• High-speed steel with 5% cobalt (HSS-Co) for superior heat resistance and durability
• DIN 338 standard dimensions for compatibility with standard drill chucks
• 4.5 mm diameter with 80 mm overall length and 47 mm flute length
• 135° split point for self-centering and reduced walking
• Fully ground, bright finish for precise cutting edges
• Right-hand cutting direction
• Tolerance h8 for consistent hole sizing

Specifications

• Drill bit type: Twist drill bit
• Material: HSS-Co (5% cobalt)
• Standard: DIN 338
• Diameter: 4.5 mm
• Overall length: 80 mm
• Working length: 47 mm
• Point angle: 135°
• Point type: Split point
• Shank type: Cylindrical
• Manufacturing process: Fully ground
• Surface finish: Bright
• Cutting direction: Right-hand
• Tolerance: h8
• Recommended materials: Steel (alloyed/unalloyed), stainless steel, cast iron, non-ferrous metals, plastics

Tips

Use cutting fluid when drilling stainless steel or hardened alloys to extend bit life. For best results, start with a center punch or pilot hole to guide the bit.