Tapcon 3/8" x 5" LDT Large Diameter Concrete Screw - Hex Head - Zinc | Qty. 40 Ring Shank - Common Nails these screws perform reliably in

these screws perform reliably in marine or high-exposure environments

Washer-Style Head – Increases clamping force while reducing the risk of pull-through or material damage

Hex Washer Head: Ensures driving control and strong clamping force

The Simpson ECCQ66SS-SDS2

Tapcon 3/8" x 5" LDT Large Diameter Concrete Screw - Hex Head - Zinc | Qty. 40 Ring Shank - Common Nails these screws perform reliably inLDT Tapcon Concrete Screw Anchors are a proven solution for high strength anchoring in concrete and masonry. With their robust design and aggressive thread profile, these heavy duty screws provide consistent performance in structural, industrial, and commercial settings. Built for speed and holding power, these anchors cut their own threads into base material, no inserts or expansion required. The dual lead thread reduces installation time while