I cannot tell you the size of the holes but I can tell the type of screws you would need; M8, 1.25mm thread pitch. Min depth-0.67", max depth-1.38". Hope this helps!
What size screw to mount sanyo 42 inch tv
No
m6
What size srews mount a 32" proscan lcd tv
M6 X 1.00mm pitch
what size screws to mount a 26' flatscreen
OmniMount™ Cantilever for 42" to 63" Plasma HDTVs is the biggest mount panasonic makes.
The screws needed to mount the Vizio E420VT are M6 x 1.0mm x 20mm
M8 length 15mm pitch 1.25mm, pitch 1.25, Hole pattern 200 x 600.
This bracket is made for use with the Panasonic Professional 7-9 series 42" to 50" displays.
There are specific screws that should used when installing a TV onto wall mount brackets. These screws are much longer than typical screws and can be bought at Ace's.
RCA makes many models of televisions. We will need to know the model, or at least the size of your television in order to answer this question. Without this information, this question is akin to asking 'What size of tires does my Ford take?'
M8 (8 mm) x 15mm should work with these TV's. Make sure you use the spacers for the wall mounts if your TV was supplied with them.