Simpson #12 x 4" Self-Drilling Hex-Washer Head Screw, 316 Stainless Steel Router Bits w/Knives effectively hiding screw heads and

effectively hiding screw heads and eliminating the visual distraction of exposed fasteners on your outdoor project

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

and accepts surface finishes for a clean final appearance

high-impact rotary hammer drilling requiring accurate hole placement

bolts OR (42) #10 x 1-1/2 in

Simpson #12 x 4" Self-Drilling Hex-Washer Head Screw, 316 Stainless Steel Router Bits w/Knives effectively hiding screw heads andSimpson #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