Tongue-Tite Plus Screws - Tongue & Groove Flooring Screws - Stainless Steel Tongue-Tite Plus is the easy fix for installing tongue and groove flooring and cladding. The ideal screw for exterior use such as cladding and tongue & groove boards Stainless steel for excellent corrosion resistance Hidden Removable Two free T10 driver bits in each box Available in three sizes - 3.5 x 32mm/3.5 x 45mm/3.5 x 49mm Due to the nature of stainless steel, if you are using this product on hardwoods please drill a pilot hole TX Countersunk Its single course thread has been designed to eliminate the ream out of the floor boarding, giving high pull out retention. In other words - no more squeaky boards! The star recess provides greater grip and control on application whilst the narrow countersunk head gives a neat flush fix to allow the next board to sit in place. Unlike messy glues and nails Tongue-Tite Plus can be removed without damaging the timber should floor boards or cladding need to be moved in the future.