You can create an unpainted area between bolted steel parts using the No paint area component.

1. Click the Applications & components button in the side pane to open the Applications & components catalog.
2. Search for No paint area.
3. On the General tab:
   1. Click the Load bolt standards button to display the available bolt standards, and select the relevant standards.
   2. Select the clearance location from the Create for list.

      • Define the hole tolerance.

        

      • Define the contact area offset.

        

   3. In the Allowable gap box, enter the maximum distance that can exist between two plates so that the surface treatment can be created.
4. On the Surfacing attributes tab:
   1. Select one of the following Surfacing attributes.

      • standard surface treatment properties file

      • A custom surface treatment properties file

        You can create your own property files in the Surface treatment properties. The Type has to be Steel finish and the Subtype has to be UP - Unpainted.

      • ...

        Define the custom attributes and the position for the surface treatment.

5. Click OK.
6. Select a bolt group in the model.