Simpson APB3.75 Ornamental Post Base 3.75" Black Powder Coated Fascia Bit Why are SDS screws used

Why are SDS screws used instead of bolts on this holdown

the table provides 18 inches of longitudinal travel

Blade Tooth Material : Carbide

Teeth: 40 ATB

Stock Number: 690151

Simpson APB3.75 Ornamental Post Base 3.75" Black Powder Coated Fascia Bit Why are SDS screws usedSimpson APB3. 75 Ornamental Post Base 3. 75" Black Powder Coated by Simpson Strong Tie is a decorative adjustable post base engineered for securing a 4x4 rough cut western red cedar post or column to concrete. Part of the Outdoor Accents Mission Collection, it combines structural performance with a southwestern inspired decorative edge design, delivering both design elegance and lasting corrosion resistance through its ZMAX galvanized steel