Simpson CSD25300MG 1/4" X 3" Countersunk Head Split-Drive Anchor - Galvanized, Pkg 100 Quik Drive Wood Decking Systems the DHUTF provides superior load

the DHUTF provides superior load capacity while accommodating design requirements for both engineered wood and solid sawn lumber

enhancing strength and stability

For a lower cost alternative that uses Strong-Drive SDS Heavy-Duty Connector screws instead of bolts and offers high load capacities

WSCT Roofing Tile Screws

Type 316 stainless is the best choice for seaside or coastal environments where superior durability is essential

Simpson CSD25300MG 1/4" X 3" Countersunk Head Split-Drive Anchor - Galvanized, Pkg 100 Quik Drive Wood Decking Systems the DHUTF provides superior loadThe Split Drive anchor is a one piece expansion anchor that can be installed in concrete, grout filled block and stone. As the anchor is driven in, the split type expansion mechanism on the working end compresses and exerts force against the walls of the hole. The Countersunk head allows for a smooth surface when attaching wood or light gauge steel to concrete and grout filled block surfaces. Installation: For Common Rafters: Drill a hole in base