Drill Bit DeWalt DT5558 10.5 mm HSS for metal drilling

DeWalt DT5558 is a 10.5 mm high-speed steel (HSS) drill bit engineered for metal drilling. Designed for use with hand-held power drills and drill presses, this HSS bit delivers a precise cutting edge and reliable durability suited to producing round holes in steel and a variety of ferrous and non-ferrous metals. The geometry and material of the bit are intended to provide consistent drilling performance in maintenance, fabrication and assembly environments.

Advantages

The HSS construction ensures heat resistance and edge retention during repeated metal drilling operations. A sharp point and ground flutes allow efficient chip evacuation and stable centring, reducing walking and improving hole accuracy. The bit's 10.5 mm diameter gives a standard-sized hole useful for fasteners and fittings commonly used in industrial and workshop settings. Compatibility with standard drill chucks facilitates quick tool changes.

Suitable for

• Drilling round holes in mild and alloy steels
• Creating fastening and clearance holes for bolts and rivets
• General maintenance and repair work involving metal components
• Fabrication and assembly tasks in workshops and production lines

Key specifications

• Diameter: 10.5 mm
• Material: High-speed steel (HSS)
• Intended use: Metal drilling (ferrous and non-ferrous)
• Compatible tools: Hand-held power drills and drill presses with standard chucks
• Cut geometry: Ground point and fluted body for chip removal

How to use

Secure the bit in the drill chuck and tighten firmly. Mark the drilling position and, if necessary, use a centre punch to prevent walking. Start drilling at a moderate speed to establish the hole, then increase speed as appropriate for the workpiece material while applying steady feed pressure. Use cutting fluid or coolant when drilling harder steels to extend tool life and improve hole finish. Withdraw the bit periodically to clear chips and avoid clogging the flutes.

Usage recommendations

For best results, select drill speeds and feed rates suitable for the specific metal being drilled and apply cutting fluid when working with harder alloys. Inspect the bit for wear before use and replace when the cutting edge is dulled or the geometry is damaged to maintain hole quality and safety.