If you use the Arca Swiss type tripod clamp, it's simple enough to buy a plate with the correct 3/8 x 16 tpi screw in it.
The even better alternative for Leica cameras is Leica's own CTOOM bracket. It incorporates a camera screw on one end (slides to fit the LTM as well as M cameras), and a rounded portion to fit the other end of the camera (with the baseplate holding peg). You also get a nifty little cold flash shoe, so that you can keep using your accessory viewfinder while using a flash.
Here's a random example to give you an idea of what it looks like.
As you can see, you have two tripod mounting holes in the middle. So the last advantage is that it can center your camera over the tripod.
They came with the 1/4" x 20 tpi screw for North American cameras, and the 3/8 x 16 tpi screw for European cameras. Make sure you buy the one with the right thread size.
The only camera that I own that won't work on the CTOOM is the M5. The body is too big, and the wrong shape to fit.