A:Answer The screws used for mounting the ENERGY STAR® Qualified LG 4K UHD HDR Smart LED TV - 43" Class (42.5" Diag), Model # 43UH6100 have two measurements, "M" for the diameter in millimeters and "L" for the length in millimeters. M6 is the correct diameter for the screws that will fit into the holes in the back of the TVC. The length will depend on how thick the selected Vesa Compliant Wall Mount is. Fortunately, you don't need to worry about the diameter or the length since Vesa Compliant Wall Mounts come with the correct screws as long as you get the Wall Mount Bracket with the correct A x B Vesa Wall Mount Pattern...^IFV