RUKO SPB-DIN338 6.5mm HSS-Co Twist Drill Bit

Drilling precise holes in tough materials like stainless steel or alloyed steel can quickly dull standard drill bits, causing wandering, overheating, and poor hole quality. The RUKO SPB-DIN338 6.5mm HSS-Co Twist Drill Bit solves this with a cobalt-alloyed high-speed steel body that withstands high temperatures and maintains hardness, ensuring clean, accurate holes even in demanding applications.

Who is it for

This drill bit is ideal for metalworkers, machinists, and serious DIYers who regularly drill into steel, stainless steel, cast iron, non-ferrous metals, and plastics. Its split point design and 135° tip angle make it especially useful for precise, self-centering starts without a center punch.

Main features

• 5% cobalt HSS-Co for high heat resistance and wear resistance
• Split point (self-centering) with 135° point angle for accurate drilling
• Fully ground flutes for efficient chip removal and reduced friction
• DIN 338 standard dimensions: 101 mm overall length, 63 mm flute length
• Cylindrical shank with h8 tolerance for secure chuck grip
• Bright finish for corrosion resistance and smooth cutting

Specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (5% cobalt)
• Diameter: 6.5 mm
• Shank type: Cylindrical
• Point angle: 135°
• Point grind: Split point
• Cutting direction: Right-hand
• Surface finish: Bright
• Manufacturing process: Fully ground
• Overall length: 101 mm
• Flute length: 63 mm
• Tolerance: h8
• Recommended materials: Alloyed/unalloyed steel, stainless steel, cast iron, non-ferrous metals, plastics

Tips

Use cutting fluid when drilling stainless steel or alloyed steel to extend tool life. For best results, drill at a moderate speed and apply steady pressure. The split point eliminates the need for center punching on most surfaces.