The washer should go on the nut side. When using a washer in a fastening application, it is typically placed between the nut and the surface being fastened. This helps distribute the load and provides a flat surface for the nut to bear against, preventing damage to the surface and improving the overall stability of the connection.
The order of assembly is usually as follows:
- Place the washer on the threaded bolt or rod.
- Insert the bolt through the hole in the surface you want to fasten.
- Screw the nut onto the threaded end of the bolt until it is tight against the washer and the surface.
By using a washer on the nut side, you ensure that the nut's pressure is evenly distributed across a larger area, reducing the likelihood of the nut digging into the material or becoming loose over time due to uneven pressure.