RUKO SPB-DIN338-TypUNI-HSSCo-6.80 mm HSS-Co Twist Drill Bit, DIN 338, Split Point, 135°

Drilling into tough steel or stainless steel often causes premature wear and wandering drill bits. The RUKO SPB-DIN338-TypUNI-HSSCo-6.80 twist drill bit solves this with a cobalt-alloyed high-speed steel body and a self-centering split point, delivering accurate holes and long tool life in demanding materials.

Who is it for

This drill bit is ideal for metalworkers, maintenance technicians, and serious DIYers who regularly drill alloyed or unalloyed steel, stainless steel, cast iron, and non-ferrous metals with tensile strength up to 1100 N/mm².

Main features

• Precision ground from HSS-Co with 5% cobalt for high heat resistance and durability.
• 135° split point starts on contact without center punching and reduces walking.
• DIN 338 standard dimensions: 6.8 mm diameter, 109 mm overall length, 69 mm working length.
• Cylindrical shank with h8 tolerance fits standard drill chucks.
• Right-hand cutting direction with bright finish for general-purpose drilling.

Specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (high-speed steel with cobalt)
• Cobalt content: 5%
• Diameter: 6.8 mm
• Shank type: Cylindrical
• Overall length: 109 mm
• Working length: 69 mm
• Point angle: 135°
• Point grind: Split point (self-centering)
• Cutting direction: Right-hand
• Tolerance: h8
• Surface finish: Bright finish
• Manufacturing process: Fully ground
• Suitable materials: Steel (alloyed/unalloyed), stainless steel, cast iron, non-ferrous metals
• Max tensile strength: Up to 1100 N/mm²
• Heat resistance: High
• Flute type: Standard spiral
• Series/type: Type UNI

Tips

Use a suitable cutting fluid when drilling stainless steel or high-strength alloys to extend tool life. For best results, ensure the workpiece is securely clamped and the drill is held perpendicular to the surface.