how to find the child of an object i hit with raycast

Like the title says i need to find the children of an object i hit with a raycast so far i have

 float tempDist = 0f;
                             float prevDist = 0f;
                             foreach (Transform child in transform)
                             {
                                 if(tempDist != null)
                                 {
                                     prevDist = tempDist;
                                 }
                                 tempDist = Vector3.Distance(hit.point, child.transform.position);
                                 if(tempDist > prevDist)
                                 {
                                     furthestAway = child.collider.name;
                                 }
                                 if(child.collider.name == "posXLock")
                                 {
                                     posX = child.transform.position;
                                 }
                                 else if(child.collider.name == "negXLock")
                                 {
                                     negX = child.transform.position;
                                 }
                                 else if(child.collider.name == "posZLock")
                                 {
                                     posZ = child.transform.position;
                                 }
                                 else if(child.collider.name == "negZLock")
                                 {
                                     negZ = child.transform.position;
                                 }
                             }

but that returns the object the script is on how do i make it do the one i hit with a raycast