Simpson #8 x 2-1/4" Square Drive, Self-Drilling Fiber-Cement Screw, 410 Stainless Steel PACK:2500 Pk Variable blade speed range from

Variable blade speed range from 82-270 fpm with a laser pointer guide lets you see where the cut will be

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

high-quality results across a wide range of metalworking and machining applications

Bold thread design with 5 TPI and 1-1/2" thread length - delivers superior holding power in wood-to-wood connections

Solid Square at 90 Degrees: 4

Simpson #8 x 2-1/4" Square Drive, Self-Drilling Fiber-Cement Screw, 410 Stainless Steel PACK:2500 Pk Variable blade speed range fromSimpson #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