This is a good example for the use of high yield capacity Huck Bolts where there is limited access to insert a standard fishplate bolt in the offset pattern.

The process of installing the swagged collar onto a Huck Bolt by hydraulic tool ensures every bolt has maximum tension applied.

The installation process provides a maintenance free solution by negating the need to retighten these fasteners in the future as the nut component of this Huck fastener is auto locked onto the threads of the bolt through the hydraulic tension process. This process is opposed to a conventionally torque tightened nut onto a thread which mechanically provides a path for the nut to undo in the future.

Minimal noise is incurred during installing a Huck fastener compared to using rattle guns to tighten fish plate bolts (OH&S)

Other ideal rail applications for maintenance free solutions using Huck Bolts for fishplates are tunnels and rail joints on approaches to bridges etc.