RUKO SPB-DIN338-5,3mm Broca helicoidal HSSCo

Drilling precise holes in tough materials like stainless steel and alloyed steel demands a bit that resists heat and wear. The RUKO SPB-DIN338-5.3mm HSSCo twist drill bit meets that challenge with a cobalt-alloyed high-speed steel body and a split point that starts on contact without wandering.

Who is it for

Professional machinists, metalworkers, and serious DIYers who need a reliable 5.3 mm bit for industrial or general-purpose drilling in steel, stainless steel, cast iron, non-ferrous metals, and plastics.

Main features

• 5% cobalt HSS-Co construction for high heat and wear resistance
• Fully ground with a bright finish for smooth chip evacuation
• 130° split point (cross-ground) for accurate centering and reduced thrust
• DIN 338 standard with h8 shank tolerance for secure chucking
• Right-hand cutting direction for standard drilling

Specifications

• Drill bit type: Twist drill bit
• Diameter: 5.3 mm
• Overall length: 86 mm
• Working length (flute length): 52 mm
• Material: HSS-Co (5% cobalt)
• Point angle: 130°
• Point grind: Split point (cross-ground)
• Shank type: Cylindrical
• Cutting direction: Right-hand
• Tolerance: h8
• Surface finish: Bright
• Manufacturing process: Fully ground
• Suitable materials: Steel (alloyed/unalloyed), stainless steel, cast iron, non-ferrous metals, plastics

Tips

Use a cutting fluid when drilling stainless steel or hard alloys to extend bit life. For deep holes, withdraw the bit periodically to clear chips and prevent overheating.