Impact socket 17 mm 1/2" drive deep — DeWalt DT7551

DeWalt DT7551 is a 17 mm deep impact socket with a 1/2" drive designed for use with impact wrenches and heavy-duty drivers. The deep profile provides access to recessed nuts and long bolts while the impact-rated construction is made to tolerate repeated high-torque applications. The socket is intended for professional and DIY use in automotive, industrial maintenance and mechanical repair environments where reliability and fit are important.

Advantages

The impact socket features a deep design that reaches fasteners located below surrounding surfaces, reducing the need for extensions. Manufactured for impact applications, it resists deformation and cracking under repeated high-torque cycles. Precision-machined hex profile ensures a secure fit on 17 mm fasteners to minimise rounding and slippage. The 1/2" drive interface provides compatibility with common impact wrenches and breaker bars used in professional workshops.

Suitable for

• Automotive wheel and suspension work
• Engine and transmission assembly or disassembly
• Industrial maintenance and plant repair
• Mechanical workshops and professional service bays
• General fastening tasks requiring access to recessed or long bolts

Key specifications

• Drive size: 1/2" (square drive)
• Socket size: 17 mm (hex)
• Design: deep profile for recessed fasteners
• Intended use: impact-rated for high-torque applications
• Material finish: impact-appropriate hardened steel (protective finish as supplied)

How to use

Fit the 1/2" drive of the impact socket onto a compatible impact wrench or socket extension. Ensure the 17 mm hex opening matches the fastener before applying torque. Use controlled bursts of power when using air or electric impact tools to avoid over-torquing sensitive fasteners. After use, inspect the socket for wear or damage and store it in a dedicated socket rail or toolbox to prevent corrosion and preserve the hex profile.

Usage recommendations

Use this impact socket only with tools and accessories rated for impact use. Avoid using a damaged socket; replace sockets that show cracks, significant rounding or deformation. For best results, combine with properly sized impact extensions and retainers, and follow manufacturer torque specifications for fasteners to ensure safe and reliable operation.