Impact socket accessory Proline ZR18921, 50 mm length

Proline ZR18921 impact socket accessory, 50 mm length, is an impact-rated hexagonal socket component designed for use with impact wrenches and pneumatic or electric fastening tools. Manufactured from chromium-molybdenum (CrMo) steel, it offers increased tensile strength and yield point compared with ordinary chromium-vanadium sockets. The Proline socket features rounded internal angles and the PRO-DRIVE profiling to reduce point loads on fastener edges and to extend service life under heavy-duty and variable-load applications.

Advantages

The CrMo steel construction delivers higher tensile strength and improved durability for repeated impact loading and demanding industrial or automotive tasks. The PRO-DRIVE rounded open angles mitigate stress concentrations on bolt heads and the socket's internal edges, which helps prevent wall failure and allows higher torque transfer. The square drive interface is compatible with common locking mechanisms on pneumatic impact tools, ensuring secure connection during operation. The 50 mm length provides a balance between reach and control for tightening and loosening fasteners in confined and exposed positions.

Suitable for

• Automotive repair and maintenance — wheel, suspension, and engine fasteners
• Industrial maintenance and machinery assembly
• Construction fastening tasks requiring impact-rated accessories
• Pneumatic and electric impact wrench applications

Key specifications

• Type: hexagonal impact socket accessory
• Material: chromium-molybdenum (CrMo) steel
• Length: 50 mm
• Drive end: square drive compatible with common locking mechanisms on impact tools
• Internal profiling: PRO-DRIVE rounded open angles to reduce point loads
• Application rating: impact-rated for pneumatic and electric fastening tools

How to use

Attach the Proline impact socket accessory to a compatible impact wrench or drive extension by aligning the square drive and engaging the tool's locking mechanism. Ensure the socket is fully seated before applying torque. Use the socket with appropriate-sized fasteners, and apply progressive torque settings on electric or pneumatic tools according to the fastener manufacturer's recommendations. After use, inspect the socket for wear, cracks, or deformations and replace if any damage is detected.

Usage recommendations

Use personal protective equipment and follow tool manufacturer guidelines. Match the socket size exactly to the fastener to avoid rounding. Avoid using the impact socket with hand tools not rated for impact use, and store in a dry place to prevent corrosion.