Wedi non-rust galvanized 1-5/8" screws and wedi tabbed washers are now sold as a kit with 100 of each in the box. These are specially designed for use with wedi products when securing wedi board to wood studs. Wedi non-rust galvanized 1-5/8" screws and wedi tabbed washers are now sold as a kit with 100 of each in the box. These are specially designed for use with wedi products when securing wedi board to wood studs.