Pilot Drill Bits Bosch HSS-Co 2608584677

The Bosch HSS-Co Pilot Drill Bit (model 2608584677) creates a precise pilot hole to guide a hole saw and stabilise the cutting process. With an overall length of 80 mm and a 6.35 mm shank diameter, this HSS-Co pilot bit is suitable for drilling through a range of materials and fits all corded and cordless drill drivers. The pack contains one pilot drill bit designed for accurate positioning and reliable performance.

Advantages

Made from high-speed steel with cobalt (HSS-Co) for improved wear resistance and heat tolerance, this pilot bit provides stable drilling and long life. The 6.35 mm shank ensures secure clamping in standard chucks and quick-change systems. Its 80 mm length gives good reach when guiding hole saws and helps maintain alignment during cutting.

Suitable for

Key specifications

How to use

Mount the pilot drill bit securely in the drill chuck or quick-change holder, ensuring the 6.35 mm shank is clamped firmly. Mark the centre of the hole to be cut and start drilling at low speed to establish the pilot hole, then increase speed as appropriate for the material. Use the pilot hole to guide the hole saw into position and maintain steady pressure to avoid wandering. For metal work, apply cutting fluid to reduce heat and extend bit life.

Recommendations

Use appropriate personal protective equipment and select drill speed and lubrication according to the material. Replace the bit when wear or damage reduces accuracy.