For each of the ports on the manifold block, we will use a pattern of four screws to attach the union cap to the block. We’ll use the corresponding screw that we’ve inserted into the assembly as the patterned component.
First, we’ll create the screw pattern for Port A.

Repeat the above for Port B union screw and Port C
union screws. Remember to rename the pattern when you are done.
Your model should look like this when you are done...
Before you continue, save the file.