Allen Nylon Open Horn Cleat 99mm

Hi Will The cleat has a 4mm hole and stands 20mm high and the holes are countersunk at the top So you could use a 3.5 or 4.2mm screw and at least 32mm long Remember to drill a pilot hole into the wood first and if you have varnish or silicone to dip the screw in before fixing it will help the wood from absorbing moisture through the threads Link to screws https://www.tridentuk.com/gb/paints-glues-maintenance-materials/screws-bolts-tools/self-tapping-screws.html?screws_head_type=789&screws_material=784 Regards David