Simpson #8 x 2-1/4" Square Drive, Self-Drilling Fiber-Cement Screw, 410 Stainless Steel PACK:2500 Pk Tapping threads at 18 TPI

Tapping threads at 18 TPI - thread into steel efficiently and grip securely

Unique design enables the hanger to be installed either before or after the rafter is in place

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Max Material Thickness: 10 ga x 32"

making it suitable for a wide range of job-site conditions

Simpson #8 x 2-1/4" Square Drive, Self-Drilling Fiber-Cement Screw, 410 Stainless Steel PACK:2500 Pk Tapping threads at 18 TPISimpson #8 x 2 1 4" Square Drive Self Drilling Fiber Cement Screw in Type 410 Stainless Steel by Simpson Strong Tie is engineered for fastening fiber cement siding through furring strips directly to steel studs delivering reliable, long lasting holding strength in residential, agricultural, and commercial construction. The ribbed wafer head and drill point work together to seat flush and bite through metal without pre drilling, saving time and effort