I just put one in about an hour ago. Transitions from the oak parquet floor of the entry to the tile of the now dead "Pink Room". I was tight enough between the door facings that it isn't moving. I had brought an old tube of clear silicone in to put about 6 dabs across the mounting surface, but didn't need it. Kind of glad because now I don't have to try to clean silicone off the concrete before I tile the entry way.
If I was going to use anything that created a hole in the threshold, I think I'd get some decorative brass screws and countersink them, but I'd prefer not to nail it if I could. Never have been a big fan of filling the holes knowing it won't match. If you have it as a tight fit, try that for a while. I doubt it will move, at least not much. If it does move, use a few dabs of silicone to hold it down. Jim.
Home of Irish Setter Rescue of North Texas
When Irish Eyes are smiling, they're usually up to something!!
At a minimum, I'm Pentatoxic...but most likely, I'm a Pentaholic. There seems to be no known cure. Pentatonix, winners of The Sing Off, season 3