Drill bit Abraboro step drill HSS-G DIN 338 Ø3.5 mm for metal

Abraboro HSS-G DIN 338 step drill bit with a 3.5 mm diameter cutting tip is a straight-shank, cylindrical drill designed for metalworking and general workshop use. Manufactured from high-speed steel (HSS-G) to DIN 338 standards, the bit provides a hard-wearing cutting edge suitable for drilling precise through-holes and pilot holes in steel and other ferrous materials. The geometry and heat-treated material ensure consistent performance when used with hand drills and drill presses.

Advantages

The step drill bit offers a robust HSS-G construction that balances toughness and hardness for extended tool life when cutting metal. Its DIN 338-compliant geometry ensures compatibility with typical drill chucks and consistent centring for accurate hole starts. The single-flute step profile promotes controlled chip formation and evacuation, reducing the risk of clogging and improving hole quality in thin to medium-thickness metal sheets.

Suitable for

• Drilling pilot holes and through-holes in steel and other ferrous metals
• Workshop and maintenance tasks with handheld drills and drill presses
• Fabrication work on thin to medium-thickness metal sheets and plates
• General metalworking where precise, repeatable hole sizes are required

Key specifications

• Cutting tip diameter: 3.5 mm
• Material: high-speed steel (HSS-G)
• Shank type: straight cylindrical shank
• Standard: DIN 338 geometry
• Suitable workpiece: steel and other ferrous materials
• Intended use: through-holes and pilot holes

How to use

Secure the workpiece and select appropriate clamping to prevent rotation. Fit the drill bit into a properly rated drill chuck and set the drill or press to a speed suitable for high-speed steel in metal (moderate speed for steel). Apply steady, even feed pressure and allow the bit to cut without excessive force. Use cutting lubricant when drilling thicker or tougher ferrous materials to reduce heat and improve chip evacuation. After drilling, withdraw the bit carefully while the spindle is still turning to clear chips from the hole.

Usage recommendations

For best results, use cutting oil when working with steel, maintain moderate drill speeds to avoid overheating, and inspect the cutting edge regularly. Replace the bit when signs of wear such as blunting or chipping appear to maintain hole quality and operator safety.