Drill Bit Abraboro fi 7.5 HSS-G DIN 338 VULCANO — stepped point, metal drilling

Abraboro VULCANO HSS-G drill bit, 7.5 mm diameter, designed to DIN 338 with a stepped (tiered) point for metal drilling. Manufactured from high-speed steel (HSS-G), this twist drill is intended for accurate through-holes in steel, iron and similar ferrous and non-ferrous materials. The stepped point helps to reduce walking at the start of drilling and improves chip evacuation for cleaner holes when used in handheld drills or drill presses.

Advantages

The HSS-G material provides good hardness and heat resistance for general-purpose metalworking. The stepped point geometry offers improved centering and reduces the need for pilot holes, resulting in faster setup and more consistent hole position. Produced to DIN 338 dimensions, the bit fits standard chucks and provides reliable concentricity and chip removal during continuous work.

Suitable for

• Drilling through-holes in mild and medium carbon steels
• Workshop tasks with handheld drills and drill presses
• Metal fabrication, maintenance and repair jobs
• Preparing holes for bolts, rivets and fasteners in metal sheets and plates

Key specifications

• Diameter: 7.5 mm
• Material: high-speed steel (HSS-G)
• Point type: stepped (tiered) cutting point
• Design standard: DIN 338 (twist drill geometry and dimensions)
• Application: metal drilling — through-holes

How to use

Secure the workpiece firmly in a vise or with clamps to prevent movement. Select an appropriate cutting speed for the material being drilled and ensure the drill is properly clamped in the chuck. Apply steady, moderate feed pressure; allow the drill to cut without excessive force. Use cutting fluid on ferrous materials to reduce heat and extend tool life, and periodically withdraw the drill to clear chips when drilling deep holes.

Usage recommendations

For best results, start at low speed to establish the hole and then increase to the recommended cutting speed for the specific metal. Use appropriate personal protective equipment and maintain the drill bit by regrinding according to the stepped point geometry when worn.