For any TV mount, just check the VESA pattern of the mounting holes. Samsung publishes this, and typically it is 200x200 or 400x200 or similar. That's the space, in millimeters between the holes on the TV (if you don't know). Typically width first, then height. So, a 600x400 VESA hole pattern means the holes a 600mm apart left/right, and 400mm apart top/bottom. Some mounts can handle different sizes, and as long as the mount is rated to handle the size you have, then just check the weight, and the mount will work just fine.
After a quick look it appears that the UN75F6400 is a 400x400 VESA pattern, so just look for that compliance of any mount, with support for the weight of the TV (plus a few pounds) and you'll be good.
Now, if you want a 'tilting' mount, it must be a couple of inches from the wall to allow for the tilt. A fixed mount will get it closer to the wall.
Here's your .6" off the wall mounting solution which is compatible with your TV.
Low Profile Wall Mount Bracket for LCD LED Plasma (Max 200 lbs, 37~63 inch) - Monoprice.com
Watch out for power cables or anything else behind the TV!