“what length screws are needed to wall mount this tv QN75Q6FNAFXZA?”
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The Q6 model is completely changed in mounting. The threaded lugs are recessed into the back and there are 4 stand-off tubes in the packet with the remote, manuals, etc. The stand-off tubes create a plane for the VESA mount, even though the back of the TV is curved now. Because the tubes add a good bit of length you will not be able to use 10mm length screws. The screws I used are M8 1.25 pitch 50mm length. Yes 50mm and with a washer under the head it got tight just short of bottoming out. If you do not use a washer or if your mounting hardware is thinner than mine you may need to use M8 1.25 in 45mm length. I chose the cap head or Allen screws in black oxide finish from an ACE Hardware store at 1.79 each. That was the same price as for zinc plated. The washers I got were also black oxide to complement the look. You could use M8 1.25 x 45mm and skip the washers if you by the flanged heads in zinc or stainless or the bright yellow plating that is on most of the grade 5 or 8 hardware.
Sorry, there was a problem. Please try again later.The VESA mount holes use M6 screws with no more than 10mm penetration into the TV. The screws you use to attach to the wall must be adequate for the weight of the TV plus the wall mount plus any soundbar or other accessories you may hang from the mount. For a stud wall I would recommend the SPAX hardened fasteners in at least 3-inch length (not more than 4-inch assuming you have 3.5-inch studs with 1/2 inch drywall). You should get washers if the mount has slots instead of round holes. Use an impact driver to install the fasteners and pre-drill the pilot hole at least 1/8 smaller than the thread size. Lubricate the fastener with some candle wax or small amount of oil before driving into the stud. Use a minimum of 2 fasteners on each of 2 studs.
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