DIN571 wood screws are used in construction widely! *Material:Carbon steel,stainless steel *Finish:Zinc plated HDG DIN571 WOOD SCREWSStandard:DINMaterial:Carbon steel,stainless steelDiameter:5mm-36mmLENGTH:16mm-300mmThread:MM,UNC,UNF,Grade:4.8Finish:Plain,Zinc,Blank,Nickel,Chrome,H.D.GPacking:Carton,Box,Bag,Pallet