Cap nut for Demag AC80-1

The cap nut 513 431 98 is a specialized fastener used in the assembly of the Demag AC80-1 crane. Unlike a standard hexagonal nut, this component features a closed end that covers the exposed threads of a bolt or stud once it has been tightened. This design prevents the ingress of dirt and moisture, protecting the threaded connection from oxidation and corrosion. Additionally, the closed end covers sharp edges, which improves safety for personnel working near the crane mechanisms.

This component is compatible with the Demag AC80-1 model. It is typically utilized in areas of the crane where exposed threads require protection from the elements or where a clean, finished appearance is necessary, such as on external mechanisms, cab assemblies, or chassis components.

Cap nuts serve as a protective barrier for threaded fasteners in heavy machinery. By sealing the end of the bolt, they prevent debris from accumulating in the threads and protect the fastener from environmental wear. This helps maintain the integrity of the bolted joint and simplifies maintenance by keeping the threads clean and accessible for future adjustments or disassembly.