Reaction washer ZBW series

roundmetal

Features
• Eliminates need for backup wrench
• Removes pinch point hazards
• ASTM F3394/F3394M compliant
• Enhances bolting safety
• Improves installation efficiency
• Compatible with standard torque systems

Overview

The HYTORC Backup Washer is designed to eliminate the need for a secondary backup wrench during bolting operations, significantly improving both safety and efficiency in industrial fastening environments. Traditional bolting methods require an operator to manually hold a backup wrench to counteract rotational force, creating high-risk pinch points and increasing labour complexity. The Backup Washer removes this requirement entirely by mechanically managing reaction forces within the fastening system itself.

Engineered to comply with ASTM F3394/F3394M standards, the washer ensures consistent performance in regulated industrial environments where safety and reliability are paramount. By integrating reaction control into the washer design, it allows torque to be applied in a controlled and stable manner without additional manual intervention.

The elimination of backup tools not only improves safety but also reduces the number of personnel required for bolting operations. This leads to faster installation times, reduced labour costs, and improved workflow efficiency, particularly in large-scale flange maintenance and assembly operations.

The HYTORC Backup Washer is fully compatible with standard hydraulic torque tools, allowing for seamless integration into existing bolting procedures without system redesign. It is particularly effective in high-risk industries such as oil and gas, chemical processing, and power generation, where safety compliance and operational efficiency are critical.