Abraboro VULCANO HSS-G DIN 338 twist drill with stepped point, Ø 11.5 mm

Abraboro VULCANO HSS-G DIN 338 twist drill with stepped point, Ø 11.5 mm is a high-speed steel drilling tool designed for accurate hole making in steel and general metalworking. The drill conforms to DIN 338 geometry and features a stepped/centred point that helps start holes more precisely and reduces wandering on manual and machine drills. With a diameter of 11.5 mm, the bit is intended for routine workshop and industrial applications where straightness, chip evacuation and wear resistance are required.

Advantages

This HSS-G twist drill offers a combination of hardness and toughness typical of high-speed steel, providing resistance to heat and abrasive wear during standard metal drilling tasks. The stepped point improves centring on flat and slightly rounded surfaces, reducing the need for pre-punching and improving first-hole accuracy. The DIN 338 ground geometry promotes straight cutting and consistent chip formation, which supports reliable performance in both hand-held drills and drill presses.

Suitable for

• Drilling holes in mild and medium steels
• General metal fabrication and maintenance tasks
• Use in manual bench drills and machine drills
• Workshop and industrial production environments requiring repeatable hole quality

When it may not be suitable

This HSS-G drill is not optimized for use in hardened steels, stainless steels with high alloy content, non-ferrous soft metals where specialized geometries are preferred, or for drilling masonry, concrete, wood or plastics that require dedicated drill types. For very high-speed production or long-run automated drilling, carbide or coated carbide drills may offer longer tool life.

Key specifications

• Material: high-speed steel (HSS-G)
• Standard geometry: DIN 338 twist drill
• Point type: stepped/centred point for improved centring
• Diameter: 11.5 mm
• Typical applications: steel and general metalworking

How to use

Secure the workpiece and, if possible, clamp it to avoid movement. Select appropriate cutting speed and feed for 11.5 mm HSS drills depending on the steel grade and hardness; use cutting fluid or coolant for prolonged tool life and improved chip evacuation. Start drilling at low speed to engage the stepped point for accurate centring, then maintain a steady feed rate. Clear chips regularly and back off periodically if necessary to avoid chip packing. After use, clean and store the drill in a dry place to prevent corrosion.

What to consider before purchase

• Confirm material compatibility (suitable for mild and medium steels, general metalworking)
• Ensure your drill or machine supports the 11.5 mm diameter securely
• Decide if stepped point geometry matches your need for improved centring versus standard points
• Consider whether a coated or carbide drill is preferable for harder materials or extended production runs

Usage recommendations

Use cutting fluid when drilling steel to reduce heat and extend tool life; start at lower RPM to allow the stepped point to centre, and maintain steady feed to promote straightness and efficient chip formation.