The VESA mounting pattern on your TV requires 2 x 15mm M6 screws as well as 2 x 15mm M4 screws, as shown in the image below:
You may find that the M4 screws at the bottom are a little more resistant, we would recommend using a screwdriver for this.
Please ensure that you have the correct sized screws before attempting to install the mount.
In most cases, a variety of screws are provided with your mount. If you don't have the correct screws, these can be easily sourced at a local hardware store.
Please note that the user manual for these models have recently been updated to rectify previous images of the mounting brackets.