Align transform with Collision normal

How I could align a Transform with the normal in the collision point? That would need a Raycast or there’s a way using the Collision information?

When my object calls OnCollisionEnter it makes a instantiation, how can I align that instantiated object with the normal of the collision point?

Nevermind, I’ve readed the Scripting API: Collision.contacts . (I should check the manual first before make a question)