If I recall the threads should sit 3/8" outside the tile surface. Each manufacturer has a slightly different measurement.
To be sure: What I usually do, I install a 1/2 copper x 1/2" fip wingback 90 fastened to a backing inside the wall. (similar to the shower arm 90). Once the tile surface is established, I install the A725 with a brass nipple to accomadate the distance needed for a flush mount.





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