Impact socket accessory Proline ZR18955, length 74 mm

Proline ZR18955 is an impact socket accessory with a 74 mm length designed for use with impact wrenches and pneumatic or electric impact drivers. Manufactured from chromium-molybdenum (CrMo) steel, this elongate hexagonal socket is intended for heavy-duty fastening tasks where access to recessed or hard-to-reach fasteners is required. The socket accepts standard square drive tool interfaces and is suitable for professional applications in automotive repair, construction, and industrial maintenance.

Advantages

The CrMo steel construction delivers higher tensile strength and improved yield point compared with standard chromium-vanadium sockets, resulting in extended service life under repeated impact loads. The socket features a PRO-DRIVE internal profile with rounded open angles between work planes to reduce peak stresses on fastener edges and socket walls, allowing higher transmitted torque without premature wear or breakage. Its square drive design is compatible with common locking mechanisms used by pneumatic impact tools, and the 74 mm length provides extra reach for recessed bolts and nuts.

Suitable for

• Accessing recessed fasteners in automotive repair and underbody work
• Heavy-duty fastening and loosening with pneumatic or electric impact drivers
• Construction and assembly tasks requiring extended reach
• Maintenance and service operations in industrial environments

Key specifications

• Tool type: hexagonal impact socket accessory
• Material: chromium-molybdenum (CrMo) steel
• Overall length: 74 mm
• Drive connection: square drive compatible with standard impact tool locking mechanisms
• Profile: PRO-DRIVE rounded internal angles for reduced stress concentration
• Intended use: designed for impact wrench and impact driver applications

How to use

Select the correct socket size for the fastener and fit the socket onto the square drive of an appropriate impact wrench or driver. Ensure the socket engages fully with the tool’s locking mechanism before operating. Use appropriate torque and impact settings for the fastener material and application, and maintain a firm grip on the tool during use. Inspect the socket regularly for signs of wear or damage, particularly around the drive connection and working faces, and replace if deformation or cracking is observed.

Usage recommendations

Use the socket with recommended impact-rated tools and safety equipment. Avoid using the socket with non-impact tools or with cheater bars. Store in a dry environment and keep the working surfaces clean to maintain fit and prevent corrosion.