RUKO EGB-HSS-55°-1x broca helicoidal 1 mm DIN 338

Precision drilling in plastics, non-ferrous metals, and thin sheet metal demands a tool with exact geometry and a sharp, stable cutting edge. The RUKO EGB-HSS-55°-1x twist drill bit, with its 55° point angle and ground flutes, is built for machinists and metalworkers who need clean, accurate holes and reliable chip evacuation in demanding workshop environments.

Key specifications

• Diameter: 1 mm
• Total length: 34 mm
• Flute length: 12 mm
• Material: High-speed steel (HSS)
• Point angle: 55°
• Shank type: Cylindrical
• Cutting direction: Right-hand
• Surface finish: Bright (uncoated)
• Tolerance: h8
• Standard: DIN 338
• Packaging quantity: 1 piece

Why choose it

This drill bit is precision ground for accurate hole sizing and smooth cutting. The 55° point angle is specifically suited for chamfering and countersinking applications, as well as drilling in thin materials where a standard 118° point may wander or deform the workpiece. The bright finish reduces friction and helps prevent chip adhesion, extending tool life in non-ferrous applications.

Ideal use cases

• Drilling small-diameter holes in plastic components
• Creating pilot holes in thin sheet metal
• Chamfering and countersinking operations
• Precision work in non-ferrous metals like aluminum and brass

Good to know

Manufactured to DIN 338 standards, the short flute length relative to diameter provides excellent rigidity, reducing the risk of breakage in small-diameter drilling. The cylindrical shank fits standard drill chucks. For best results, use appropriate cutting speeds and lubrication when drilling metals.