A:AnswerThe S90F uses 4x M8 screws. The thread pitch is always 1.25mm, and the necessary screw length may vary depending on the thickness of your wall mount bracket and whether spacers or washers are being used.
~ Samsung Specialist
A:AnswerAccording to RTINGS Home computer video, the 65" with the letters FXZA in the model number use the QD-OLED screen.
Here is the video
https://www.youtube.com/watch?v=KwzccwzGFhw
