RUKO SPB-DIN338-13.0mm-HSSCo Twist Drill Bit

Drilling into tough materials like stainless steel or hardened alloys quickly dulls ordinary bits, causing wandering, overheating, and poor hole quality. The RUKO SPB-DIN338-13.0mm-HSSCo solves this with a cobalt-alloyed high-speed steel body and a self-centering split point, delivering clean, accurate holes in demanding metals.

Who is it for

Professional machinists, metalworkers, and serious DIYers who need a reliable 13 mm twist drill bit for alloyed and unalloyed steel, stainless steel, cast iron, and non-ferrous metals.

Main features

• 13.0 mm diameter with h8 shank tolerance for precise chuck fit.
• 5% cobalt HSS-Co construction withstands high heat and maintains hardness.
• 135° split point starts on contact and reduces walking.
• Fully ground flutes with right-hand spiral for excellent chip removal.
• DIN 338 standard dimensions: 151 mm total length, 101 mm flute length.

Specifications

• Drill bit diameter: 13.0 mm
• Material: HSS-Co (high-speed steel with 5% cobalt)
• Standard: DIN 338
• Point angle: 135°
• Point type: Split point (self-centering)
• Shank type: Cylindrical
• Flute type: Right-hand spiral
• Surface finish: Bright
• Total length: 151 mm
• Working length (flute length): 101 mm
• Tolerance: h8
• Manufacturing process: Fully ground
• Recommended application: Alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals
• Heat resistance: High
• Chip removal: Excellent
• Core strength: High
• Packaging: Single piece

Tips

Use cutting fluid when drilling stainless steel or cast iron to extend bit life. For deep holes, withdraw the bit periodically to clear chips and prevent binding.