How to use a function from other script?

I have one script that uses a lot of objects and script with the raycast in it. How can I use a function from first script in the second that applies to RaycastHit object? (RaycastHit object have first script)
Just like that:

Code (CSharp):

1.  Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
2. rayOut = Physics.Raycast(ray, out hitted, rayDistance);
3. if (rayOut && hitted.collider.tag == "Snaptable")
4.         {
5.             //something that uses a function
6.         }
7.  

 

Where your "//something" comment is, do something like:

Code (csharp):

1. var snap = hitted.collider.GetComponentInParent<Snaptable>();
2. snap.DoSomething();

 

thx