The location of fasteners and linear components is important to consider for washdown environments. Fasteners can protrude, creating a gap that is potentially another area for contamination to accumulate, especially when mounted on the washdown side.
To help eliminate these hazardous areas we recommend bringing the fastener up through the bottom of the rail when mounting. In addition, for fasteners that enter the washdown area, use a dome nut (or similar) for easier cleaning.
For components that are not FDA compliant or that don't meet other regulations for food contact, it is recommended to cover those components with stainless steel shields or covers that have been radius on all corners.
For more information on LEE Linear solutions for washdown environments read: Linear Motion Design for Washdown Environments.