Simpson #12 x 4" Self-Drilling Hex-Washer Head Screw, 316 Stainless Steel Router Bits w/Knives ensuring compatibility with standard UNC-threaded

ensuring compatibility with standard UNC-threaded hardware of the appropriate diameter and class

and environmentally friendly cleaner for removing pitch

high-impact rotary hammer drilling requiring accurate hole placement

The CBSQ44SS serves as the critical interface between a 4x4 column and its concrete foundation

The checkered pattern on the full-round head serves three practical purposes: it blends visually with natural wood grain for a cleaner appearance on visible surfaces

Simpson #12 x 4" Self-Drilling Hex-Washer Head Screw, 316 Stainless Steel Router Bits w/Knives ensuring compatibility with standard UNC-threadedSimpson #12 x 4" Self Drilling Hex Washer Head Screw in 316 Stainless Steel is a heavy duty fastener engineered for reliable performance in corrosive and demanding environments. Built from Type 316 stainless steel the grade recognized for superior resistance to saltwater, moisture, and harsh outdoor conditions this screw is purpose designed for securing aluminum and fiberglass assemblies where a standard fastener would quickly fail. The #3 drill point