Stop washer for Tadano cranes

The stop washer, part number 99707382469, is a mechanical component used to secure bolted joints against loosening caused by vibration, dynamic loading, or thermal expansion. By maintaining the required preload on screws, nuts, and bolts, this component helps ensure that connections remain tight and stable during crane operation. It is intended for use in various critical assembly points throughout Tadano cranes, including areas subject to constant movement and intense vibration such as the chassis, boom structure, or slewing systems.

This component is compatible with Tadano crane equipment. It serves as a locking mechanism within the fastening system to prevent the rotation of threaded fasteners. In heavy machinery, stop washers are used to preserve the structural integrity of assemblies by resisting the forces that typically cause fasteners to back out over time. Proper installation of these washers is a standard procedure during maintenance to ensure that all mechanical connections remain secure during the operation of the machine.