The CLSZN is a double threaded screw suitable for use with timber cladding. The screw consists of type 17 point to prevent timber splitting on insertion and flat head with fiber lock technology which prevents moisture getting into the timber. The double thread ensures sufficient insertion, even in high density wood without the risk of spin-off. It also helps pull the cladding tight to the frame. The CLSZN screw has Impreg^®+ coating and as therefore suitable for use in outdoor environments.