Drill Bit DeWALT DT5540-QZ Length 65mm Suitable for Metal

The DeWALT DT5540-QZ drill bit, length 65 mm, is designed for portable drilling in steel and other metals with tensile strength up to 900 N/mm². The bit features a gold ferrous oxide coating to reduce overheating and an innovative tapered web that reduces the risk of breakage. Three flat sides on the shank prevent slipping in the chuck. Each pack includes 10 pieces.

Advantages

The tapered web design increases strength at the core to reduce breakage during heavy or prolonged drilling. The gold ferrous oxide coating provides improved heat resistance for longer bit life and more consistent cutting performance. Three flat sides on the shank ensure stable clamping in standard chucks, minimizing wobble and improving drilling accuracy.

Suitable for

• Portable drilling in mild and alloyed steel up to 900 N/mm²
• Metalworking tasks requiring 65 mm drill length
• Professional and DIY applications where durable metal drill bits are needed

Key specifications

• Brand: DeWALT
• Model / MPN: DT5540-QZ
• Length: 65 mm
• Suitable material: Steel, alloyed and non-alloyed (up to 900 N/mm²)
• Coating: Gold ferrous oxide
• Shank: Three flat sides to prevent slipping in the chuck
• Pack quantity: 10 pieces
• EAN: 5035048052105

How to use

Mark the drilling position and secure the workpiece. Fit the DT5540-QZ bit into a compatible drill chuck, ensuring the flat sides engage to prevent slipping. Start drilling at low speed to establish the pilot hole, then increase speed according to material and drill size while applying consistent pressure. Withdraw periodically to clear chips and avoid overheating. Replace the bit if excessive wear or damage appears.

Usage recommendations

Use cutting fluid for improved cooling and chip evacuation when drilling thicker or harder metals. Match drill speed to material hardness and maintain steady pressure—do not force the bit. Store bits dry and clean to preserve the ferrous oxide coating and overall performance.