Drill bit Heller 17813 6 HSS metal twist 10.5 mm Ø, length 133 mm, cylindrical shank, suitable for steel and non-ferrous metals

Heller 17813 6 HSS metal twist drill bit with a 10.5 mm diameter and 133 mm total length. The single-piece roll-formed DIN 338 design and cylindrical shank provide stable performance when drilling steel, cast iron, non-ferrous metals and sheet metal. Suitable for use in hand drills and drill presses for metalworking tasks.

Advantages

The high-speed steel (HSS) material offers wear resistance and maintains cutting performance under typical metal drilling conditions. The roll-formed DIN 338 geometry ensures consistent flute shape and chip evacuation, while the cylindrical shank fits standard drill chucks for straightforward mounting. A one-piece construction reduces the risk of breakage at the shank-tool interface.

Suitable for

• Drilling steel and cast iron
• Working with non-ferrous metals (aluminium, brass, copper)
• Drilling sheet metal and thin plates
• Use in hand drills and bench drill presses

When it may not be suitable

This HSS twist drill is not optimized for drilling hardened or heat-treated steels where carbide or coated drills are recommended. For extensive high-speed production or drilling in abrasive materials, more specialised tool geometries or coatings may be preferable.

Key specifications

• Material: High-speed steel (HSS)
• Diameter: 10.5 mm
• Total length: 133 mm
• Design: Roll-formed, single-piece DIN 338
• Shank type: Cylindrical
• Suitable materials: Steel, cast iron, non-ferrous metals, sheet metal

How to use

Clamp the cylindrical shank securely in the drill chuck. Use appropriate cutting speeds and feed rates for the workpiece material, apply cutting fluid when drilling steels and non‑ferrous metals to improve chip evacuation and tool life, and clear chips regularly. Start with a pilot hole if drilling large diameters in thin or delicate workpieces to prevent wandering.

What to consider before purchase

• Confirm the 10.5 mm diameter and 133 mm length suit your application and chuck capacity
• Assess whether HSS material meets the hardness and usage demands of your tasks
• Choose carbide or coated alternatives if you need higher wear resistance or to drill hardened steels

Usage recommendations

Use moderate speeds for steel and higher speeds for aluminium; apply cutting fluid for steel and maintain steady feed pressure. Replace the drill if excessive wear or chipping occurs to avoid poor hole quality.