Simpson 0.220 x 8" Black, Strong-Drive SDWS TIMBER Screw Double Barrier Hidden Standoff Post Base drywall on both sides for

drywall on both sides for fire separation

What is the difference between the ECCLRQMD3

Is the HETA40 rated for wind and seismic forces

SK40 DIN 69871

Simpson 0.220 x 8" Black, Strong-Drive SDWS TIMBER Screw Double Barrier Hidden Standoff Post Base drywall on both sides forThe Simpson Strong Drive SDWS Timber Screw in 0. 220" x 8" with a double barrier black coating is a high strength structural fastener engineered as a direct, code listed alternative to through bolting and traditional lag screws in wood framing and timber construction. Designed for both professional contractors and do it yourself builders, this heavy duty timber screw delivers reliable holding power in wood to wood fastening applications without the