Drill Bit DeWalt DT5561 HSS 12.0 mm for metal drilling

DeWalt DT5561 HSS 12.0 mm drill bit is designed for metal drilling tasks that require a durable cutting edge and consistent hole quality. Manufactured from high-speed steel (HSS), this 12.0 mm bit is suitable for use in hand-held drills and drill presses to create through and clearance holes in a variety of ferrous and non-ferrous metals. The geometry and material selection prioritise wear resistance and heat management during repetitive metal drilling.

Advantages

The HSS construction provides reliable hardness and toughness for cutting into steel and non-ferrous metals, while the 12.0 mm diameter offers a common size for mechanical and assembly applications. The bit’s flute design enables efficient chip evacuation to reduce heat buildup and minimize workpiece damage. Compatibility with standard drill chucks and good concentricity ensure stable rotation and accurate hole placement during both hand and machine drilling operations.

Suitable for

• Drilling through and clearance holes in mild and alloy steel
• Creating holes in aluminium and other non-ferrous metals
• Workshop fabrication and general maintenance drilling
• Assembly and fitting tasks where a 12.0 mm hole is required

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 12.0 mm
• Intended use: metal drilling (ferrous and non-ferrous)
• Suitable for: hand drills and drill presses
• Hole type: through and clearance holes

How to use

Secure the workpiece and mark the drilling position. Fit the HSS 12.0 mm bit into the drill chuck and tighten firmly. Start drilling at low speed to establish the centre, then increase speed appropriate to the material while applying steady, moderate pressure. Use cutting fluid on harder steels to improve heat dissipation and prolong bit life. Withdraw intermittently to clear chips and allow cooling during longer or deeper holes.

Usage recommendations

For best results, match drill speed and feed to the workpiece material: lower speeds for harder steels, medium speeds for mild steel, and higher speeds for aluminium. Use suitable personal protective equipment, a clamp or vice to secure the workpiece, and cutting fluid when drilling harder metals to extend tool life and maintain hole quality.