Broca helicoidal RUKO SPB-DIN338-HSS-TiAlN-Ø4,2 mm

With a 135° split point and TiAlN coating, this 4.2 mm HSS twist drill bit delivers high heat resistance and enhanced wear protection for demanding metalworking.

Overview

The RUKO SPB-DIN338-HSS-TiAlN-Ø4.2mm is a fully ground twist drill bit manufactured to DIN 338 standards. Its high-speed steel body is coated with titanium aluminum nitride (TiAlN), providing a bronze/grey finish that reduces friction and extends tool life. The cylindrical shank and right-hand cutting direction make it compatible with standard drill chucks.

What stands out

• TiAlN coating for high heat resistance and dry machining capability
• 135° point angle for accurate centering and reduced walking
• h8 tolerance for precise hole diameters
• Suitable for steel, cast iron, non-ferrous metals, plastics, and harder alloys

Technical details

• Drill bit type: Twist drill bit
• Material: High-speed steel (HSS)
• Coating: Titanium aluminum nitride (TiAlN)
• Standard: DIN 338
• Diameter: 4.2 mm
• Overall length: 75 mm
• Working length: 43 mm
• Shank type: Cylindrical
• Point angle: 135°
• Manufacturing process: Fully ground
• Tolerance: h8
• Cutting direction: Right-hand cutting
• Flute design: Standard spiral flute
• Coating colour: Bronze/grey

Our verdict

A professional-grade drill bit for precise, efficient drilling in tough materials—ideal for workshops and industrial use.