M4 screw pack: https://amzn.to/3ML72qL
For 50×20 / 75×35 / 75×75 / 100×100 / 200×100 (usually 28in or less)
M6 screw pack: https://amzn.to/3MNutjb
For 200×200 (usually 32in to 65in)
M8 screw pack: https://amzn.to/3R1rGFm
For 400×400 (usually 70in plus)
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You can find Tv Specific articles here
LG:
https://smarthomestarter.com/what-size-screws-do-i-need-for-an-lg-tv-wall-mount/
Samsung:
https://smarthomestarter.com/what-size-screws-are-used-to-mount-a-samsung-tv-2/
Vizio:
https://smarthomestarter.com/what-size-screws-do-i-need-for-a-vizio-tv-wall-mount/
Sony:
https://smarthomestarter.com/what-size-screws-do-i-need-for-a-sony-tv-wall-mount/
TCL:
https://smarthomestarter.com/what-size-screws-do-i-need-for-a-tcl-tv-wall-mount/
Toshiba:
https://smarthomestarter.com/what-size-screws-do-i-need-for-a-toshiba-tv-wall-mount/
Sharp:
https://smarthomestarter.com/what-size-screws-do-i-need-for-a-sharp-tv-wall-mount/
Element:
https://smarthomestarter.com/what-size-screws-do-i-need-for-an-element-tv-wall-mount/
Insignia:
https://smarthomestarter.com/what-size-screws-do-i-need-for-an-insignia-tv-wall-mount/
Hisense:
https://smarthomestarter.com/what-size-screws-do-i-need-for-a-hisense-tv-wall-mount/
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