RUKO SPB-DIN338-HSSCo8-TiAlN-Ø7.2mm HSS-Co8 TiAlN Coated Twist Drill Bit DIN 338

Drilling into tough materials like stainless steel or high-alloy steels quickly dulls standard drill bits, leading to poor hole quality and frequent replacements. This RUKO twist drill bit solves that problem with its HSS-Co8 cobalt steel construction and TiAlN coating, delivering high heat resistance and wear resistance for demanding jobs.

Who is it for

This drill bit is ideal for machinists, metalworkers, and serious DIYers who regularly drill high-alloy steels, stainless steel, acid-resistant steels, cast iron, bronze, or hard plastics. It is built for precision and durability in professional or advanced workshop environments.

Main features

• HSS-Co8 high-speed steel with 8% cobalt for excellent hardness and heat resistance.
• TiAlN (Titanium Aluminum Nitride) coating for superior wear resistance and extended tool life.
• DIN 338 standard dimensions ensure compatibility with standard drill chucks and applications.
• Fully ground flutes for precise hole sizing and smooth chip evacuation.
• 130° point angle optimized for hard materials, reducing walking and improving centering.
• Cylindrical shank with h8 tolerance for secure grip in keyless or keyed chucks.

Specifications

• Diameter: 7.2 mm
• Total length: 109 mm
• Flute length: 69 mm
• Material: HSS-Co8
• Coating: TiAlN
• Point angle: 130°
• Shank type: Cylindrical
• Cutting direction: Right-hand
• Tolerance: h8
• Manufacturing process: Fully ground

Tips

Use cutting fluid or coolant when drilling stainless steel or high-alloy steels to maximize bit life. For best results, drill at lower speeds and apply steady pressure; the TiAlN coating performs best at high temperatures generated during drilling.