All hangers in this series have double shear nailing - an innovation that distributes the load through 2 points on each joist nail for greater strength. This allows for fewer nails, faster installation, and the use of all common nails for the same connection. Nails must be driven at an angle through the joist or truss into the header to achieve the table loads. Not designed for welded or nailer applications. Galvanized. 14-gauge.