RUKO DIN 338 HSS spiraalipora 18,0 mm valssattu

Drilling large-diameter holes in tough materials demands a bit that stays sharp, cuts straight, and clears chips efficiently. The RUKO DIN 338 twist drill bit in 18.0 mm delivers exactly that, with a roll-forged high-speed steel body engineered for demanding workshop and industrial use.

Who is it for

Machinists, metalworkers, and serious DIYers who need a reliable, long-lasting drill bit for steel, cast iron, non-ferrous metals, plastics, and wood. Its DIN 338 compliance ensures compatibility with standard drill chucks and precision drilling applications.

Main features

• Roll-forged HSS construction for high core strength and durability
• 118° point angle for accurate self-centering and reduced walking
• Bright surface finish for smooth chip flow and corrosion resistance
• Cylindrical shank with h8 tolerance for secure chuck grip
• Right-hand cutting direction for standard drilling operations

Specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Diameter: 18.0 mm
• Total length: 198 mm
• Working length: 130 mm
• Material: High-speed steel (HSS)
• Manufacturing process: Roll-forged
• Shank type: Cylindrical
• Point angle: 118°
• Tolerance: h8
• Cutting direction: Right-hand cutting
• Surface finish: Bright
• Suitable materials: Steel, cast iron, non-ferrous metals, plastics, wood

Tips

For best results, use a center punch to mark the drilling spot, apply cutting fluid when drilling steel, and reduce speed as the bit exits the workpiece to prevent burrs. Store in a dry place to maintain the bright finish.