2.5mm Drill Bits

Execute precise pilot holes and secure clean entries for smaller fixings with our selection of 2.5mm drill bits. Ideal for intricate work in the workshop or on-site, these bits reduce the risk of splitting delicate materials and ensure accuracy when preparing surfaces for screws. Whether you are drilling into soft timber, plastic, or structural steel, our range delivers the stability and cutting performance needed for professional results.

Choose from standard HSS (High-Speed Steel) options for everyday tasks or upgrade to titanium-coated bits for reduced friction and longer service life during repetitive drilling. For tougher applications involving stainless steel or cast iron, our cobalt drill bits provide the necessary hardness and heat resistance. We supply trade-quality accessories from leading manufacturers including Abracs, Bosch, Draper, Minotaur, and Toolpak.

Frequently Asked Questions | FAQs

What is a 2.5mm drill bit used for?

A 2.5mm drill bit is commonly used for drilling pilot holes for screws (typically gauge 3 or 3.5mm screws) to prevent wood from splitting. It is also a standard size for drilling holes for 3mm taps (threading) or for small rivets in sheet metal work.

Can I use a 2.5mm HSS bit on stainless steel?

Standard HSS bits may struggle with the hardness of stainless steel and can blunt quickly. For drilling into stainless steel, it is highly recommended to use a 2.5mm cobalt drill bit (such as those from Toolpak), which has higher heat resistance and hardness suited for tough metals.

Why do my small drill bits keep snapping?

Small diameter bits like 2.5mm are susceptible to snapping if subjected to bending forces. To prevent this, ensure you hold the drill steady at a 90-degree angle to the work surface, use a high speed with moderate pressure, and let the bit do the work rather than forcing it.