Drill bit DeWalt DT4945-QZ for metal, length 142 mm, pack of 5

DeWalt DT4945-QZ drill bit for metal, length 142 mm, pack of 5 is a set of high-performance jobber-length twist drills engineered for reliable metalworking. Each 142 mm bit provides an extended cutting length for drilling deep holes in steel and other metals. The set is intended for use with compatible portable and stationary drills in fabrication, repair and maintenance tasks where clean, accurate holes and long reach are required.

Advantages

The drill bits feature a 'no-walk' centring tip that simplifies initial penetration on a variety of surfaces from 5 mm diameter upward, improving accuracy and reducing the need for pilot marks. Recessed cutting wings provide cleaner, burr-free holes and support longer tool life by reducing cutting resistance. A three-sided, spin-proof shank eliminates slippage in the chuck for secure, consistent torque transfer during high-load metal drilling operations.

Suitable for

• Portable and stationary drilling of high-alloy steels and metals with tensile strength up to 1100 N/mm²
• Fabrication and machining of metal components requiring deep holes
• Maintenance and repair tasks on structural and mechanical parts
• Workshops and industrial environments where burr-free, accurate holes are needed

Key specifications

• Overall length / cutting length: 142 mm (extended cutting reach for deep holes)
• Material target: designed for metalwork, including high-alloy steels
• Tip design: no-walk centring tip for easier penetration and improved accuracy
• Cutting geometry: recessed cutting wings for cleaner, burr-reduced holes
• Shank type: three-sided anti-slip shank for secure grip in drill chucks
• Pack quantity: 5 identical drill bits

How to use

Select a compatible drill with sufficient power and an appropriate chuck for three-sided shanks. Secure the bit fully in the chuck to ensure the anti-slip profile engages. Mark the drilling position or use the no-walk tip to start the hole without a centre punch when appropriate. Use steady feed pressure and appropriate cutting speeds for the metal being drilled; reduce speed for harder alloys. Apply cutting fluid or coolant where recommended to reduce heat, improve hole quality and prolong bit life. Withdraw periodically to clear chips when drilling deep holes.

Usage recommendations

For best results, match drilling speed and feed to the metal hardness, use cutting fluid for steels and alloys, and ensure the drill chuck firmly engages the three-sided shank to prevent slippage and reduce wear. Replace bits when wear or chipping affects hole quality.