Drill Bit Proline HSS cylindrical 13.5 mm for metal, model 76135

Proline HSS cylindrical drill bit 13.5 mm is engineered for accurate and reliable metal drilling. Made from high-speed steel, this 13.5 mm twist drill is intended for cutting through mild and alloy steels, non-ferrous metals and common metalwork applications. The cylindrical shank is compatible with standard chucks, making it suitable for bench drills and portable drilling machines used in workshops, maintenance and fabrication environments.

Advantages

The HSS material offers a balance of hardness and heat resistance, allowing sustained cutting performance at elevated temperatures common in metal drilling. The 13.5 mm diameter provides a specific size for clearance, bolt or through-hole requirements without the need for extensive reaming. The cylindrical shank ensures secure seating in standard chucks and simplifies tool changes. The ground tip geometry supports accurate centring and consistent hole quality in a range of metal substrates.

Suitable for

• Drilling holes in mild steel and alloy steel components
• Creating holes in non-ferrous metals such as aluminum and brass
• Workshop bench drilling and portable drill tasks
• Maintenance, repair and fabrication projects requiring precise 13.5 mm holes

Key specifications

• Material: high-speed steel (HSS) for hardness and heat resistance
• Diameter: 13.5 mm suitable for medium-sized metal holes
• Shank type: cylindrical shank for standard chuck compatibility
• Tip: ground twist geometry for centring and consistent cutting
• Application: designed for metal drilling including mild/alloy steels and non-ferrous metals

How to use

Secure the drill bit in a compatible chuck, ensuring the shank is fully seated and tightened. Select an appropriate spindle speed for the material—lower speeds for harder steels, higher speeds for softer non-ferrous metals—and apply steady feed pressure. Use cutting fluid or coolant when drilling steel to reduce heat, improve tool life and achieve better surface finish. Withdraw periodically to clear chips and avoid clogging the flutes.

Usage recommendations

For best results when drilling steel, use cutting oil and maintain moderate speeds to extend tool life. When drilling aluminum or other non-ferrous metals, increase spindle speed and reduce pressure to prevent workpiece material from welding to the cutting edges. Inspect the cutting edge before use and replace the bit if wear or chipping is evident.