Simpson 0.220 x 6" Black, Strong-Drive SDWS TIMBER Screw Double Barrier ECC End Column Caps Projects requiring NDS-compliant bolt spacing

Projects requiring NDS-compliant bolt spacing at connection points

Wrench Size: 7/16 in

making it well-suited for machining larger-diameter bar stock and workpieces that exceed the capacity of standard lathes

What is the significance of the checkered head pattern on these nails

What material and gauge is the THAI-2 made from

Simpson 0.220 x 6" Black, Strong-Drive SDWS TIMBER Screw Double Barrier ECC End Column Caps Projects requiring NDS-compliant bolt spacingThe Simpson Strong Drive SDWS Timber Screw is a high strength, heavy duty structural fastener engineered to deliver a fast, code compliant alternative to traditional lag screws and through bolting in wood framing and timber construction. Built with a 0. 220 inch shank diameter, a 6 inch length, and a double barrier coating that provides corrosion resistance equivalent to hot dip galvanization, this screw is purpose built for demanding wood to wood