Drill bit DeWalt DT4949-QZ for metal, single piece

DeWalt DT4949-QZ drill bit for metal, single piece is designed for portable or stationary drilling in a wide range of ferrous and non-ferrous metals. This single cutting tool is intended for use with compatible drills to create clean, accurate holes in metal workpieces. It is suitable for metals and high-alloy steels with tensile strength up to 1100 N/mm² and features a 'no-walk' tip that enables easier penetration on surfaces from 5 mm and above, producing burr-free results thanks to recessed cutting wings. The shank is a three-sided, spin-proof design that prevents slipping in the drill chuck for reliable torque transfer.

Advantages

The no-walk tip reduces wandering at the start of drilling, improving precision and reducing the need for centre-punching on many surfaces. Recessed cutting wings deliver cleaner, more accurate holes with minimal burr formation, reducing time spent on post-drill finishing. The three-sided, anti-slip shank improves grip in standard drill chucks and provides consistent torque transmission under load. The single-piece supply allows users to purchase the exact number of bits needed for specific tasks.

Suitable for

• Drilling holes in high-alloy steels and general metal fabrication
• Maintenance and repair work on metal components
• Portable on-site drilling and stationary workshop drilling
• Creating precise, burr-reduced holes for assembly and fastening

Key specifications

• Application: drilling in metals and high-alloy steels up to 1100 N/mm² tensile strength
• Tip: no-walk (reduced wandering) for improved start-up accuracy
• Cutting design: recessed cutting wings for cleaner, burr-reduced holes
• Shank type: three-sided, spin-proof shank for improved chuck grip
• Pack quantity: single piece

How to use

Secure the drill bit firmly in a compatible drill chuck using the three-sided shank to ensure a stable, slip-resistant grip. For best results on harder metals, mark the drilling point and, if required, use a centre punch for extra guidance on very thin or highly polished surfaces. Start drilling at low speed to engage the no-walk tip, then increase speed and apply steady pressure appropriate for the material hardness. Use cutting fluid or coolant when drilling high-alloy steels to extend bit life and reduce heat buildup. After drilling, clear chips and deburr the hole if necessary.

Usage recommendations

Use suitable cutting fluid when drilling hard or high-alloy steels; maintain steady feed and avoid excessive side loads. Replace the bit when wear or damage degrades cutting performance to preserve hole quality and reduce risk of breakage.