RUKO SPB-DIN338-HSS-G-Kreuz-9,3mm σπειροειδές τρυπάνι

Precision drilling in metal often suffers from wandering drill bits and rough hole finishes. The RUKO SPB-DIN338-HSS-G-Kreuz-9.3mm twist drill bit solves this with a split point design that centers itself on contact, eliminating the need for center punching. Ground from high-speed steel to DIN 338 standards, it delivers clean, accurate holes in steel, cast iron, non-ferrous metals, plastics, and wood.

Who is it for

This drill bit suits machinists, metalworkers, and serious DIYers who demand consistent hole quality and long tool life. It works with standard drill chucks and is ideal for general-purpose drilling tasks where precision matters.

Main features

• Split point (Kreuzanschliff) with 135° point angle for self-centering and reduced walking
• Precision ground HSS-G high-speed steel for sharp cutting edges and durability
• DIN 338 standard dimensions: 9.3 mm diameter, 125 mm overall length, 87 mm flute length
• Cylindrical shank with h8 tolerance for secure chuck grip
• Bright finish for low friction and easy chip evacuation
• Right-hand cutting direction for standard drilling

Specifications

• Drill bit type: Twist drill bit
• Material: HSS-G (high-speed steel, ground)
• Diameter: 9.3 mm
• Point type: Split point
• Point angle: 135°
• Shank type: Cylindrical
• Shank diameter: 9.3 mm
• Overall length: 125 mm
• Flute length: 87 mm
• Cutting direction: Right-hand
• Surface treatment: Bright (uncoated)
• Manufacturing process: Precision ground
• Tolerance: h8
• Number of flutes: 2
• Suitable materials: Steel, cast iron, non-ferrous metals, plastics, wood

Tips

Use a cutting fluid when drilling steel to extend bit life and improve hole finish. For deep holes, withdraw the bit periodically to clear chips. The split point reduces thrust pressure, so lighter feed force is needed compared to standard bits.