Simpson Strong-Tie HDU8 Holdown with SDS Screws The PA35 purlin anchor is

The PA35 purlin anchor is made of 12 gauge galvanized steel

The 1″ standoff height is code-required when supporting permanent structures that are exposed to weather or water splash

The Simpson Strong-Tie HDU5-SDS2

5 holdown is pre-deflected during the manufacturing process

Most models have triangle and round holes

Simpson Strong-Tie HDU8 Holdown with SDS Screws The PA35 purlin anchor isThe Simpson Strong Tie HDU8 SDS2. 5 holdown is pre deflected during the manufacturing process, virtually eliminating deflection under load due to material stretch. They use Simpson Strong Tie Strong Drive SDS screws (included) which install easily, reduce fastener slip and provide a greater net section when compared to bolts. Anchor with a 7 8 anchor. Made of 10 gauge galvanized steel.