Simpson 0.220 x 8" Black, Strong-Drive SDWS TIMBER Screw Double Barrier Hidden Standoff Post Base ensuring precise and repeatable movements

ensuring precise and repeatable movements during fine finishing cuts and detailed machining work

2-9/16 inch wide

drywall on both sides for fire separation

What is the difference between the ECCLRQMD3

Simpson 0.220 x 8" Black, Strong-Drive SDWS TIMBER Screw Double Barrier Hidden Standoff Post Base ensuring precise and repeatable movementsThe 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