Click the Place tool again.
Double-click Screw.ipt.
In the Place Standard iPart dialog box, identify the iPart member Screw-01. Place three Screws in the graphics window, and then Dismiss the Place Standard iPart dialog.
Before you continue, save the file to a new name, and then close the current file.
Now you’re ready to begin assembling the components and establishing their relationships.
First, we’ll change the colors of the union_cap components to make them stand out more prominently in the assembly: