Simpson Strong-Tie HDQ8 Holdown with SDS Screws Screw holes are configured to

Screw holes are configured to allow for double installation on a two-ply (minimum) truss

The stainless steel concrete screws are ideal for attaching all types of components to concrete and masonry in environments where corrosion is a concern

The Simpson Strong-Tie HU210 is a 2 x 10 hanger made with 14 gauge galvanized steel

The Simpson Strong-Tie HU26-2 is a double 2 x 6 hanger made with 14 gauge galvanized steel

The Simpson Strong-Tie HUC616 is a 6 x 16 concealed flange hanger made with 14 gauge galvanized steel

Simpson Strong-Tie HDQ8 Holdown with SDS Screws Screw holes are configured toThe HHDQ series of holdowns combines low deflection and high loads with ease of installation. The unique seat design of the HDQ8 greatly minimizes deflection under load. Both styles of the holdown employ the Simpson Strong Tie Strong Drive SDS screws which install easily, reduce fastener slip and provide greater net section when compared to bolts. They may be installed either flush or raised off the mudsill without a reduction in load value.