Description:The structural wood screws for metal is made of high quality Carbon steel materials,durable and sturdy.The Carbon steel is high strength and no deformation,which can be used for long time.Stainless self tapping screws are ideal for using in wood,metal and other thouhg materials.Self tapping sheet metal screws can widely used in various industries,such as construction,engineering,manufacturing,etc.Screws for metal are very precise and easy to ues and clean.