VW T7 Multivan Rail Adapter

When making interior equipment for the Multivan T7, I needed an adapter that can be screwed from below, for example, to a manufactured cabinet and then inserted into the floor rails. The adapter fits snugly, you need to push it a little to fully insert it (its height is 24mm, the depth of the rails is 25mm). I am attaching a Fusion file where you can change the parameters. My original model is for a 4mm countersunk screw.