Simpson #12 x 3" Self-Drilling Hex-Washer Head Screw, 316 Stainless Steel Self-Drilling Fiber-Cement Screw Combining a robust 3 HP

Combining a robust 3 HP spindle drive with advanced digital readout technology and fully integrated powerfeeds on all three axes

Fine-tuning is possible at

Deck-Drive Screw Plug Solution - Color-matching screw plug covers for DCU composite screws

The deep 6-lobed recessed ribbed head countersinks cleanly and holds the T25 bit securely to eliminate frustrating cam-outs

Head stamp includes length in mm for easy on-site inspection

Simpson #12 x 3" Self-Drilling Hex-Washer Head Screw, 316 Stainless Steel Self-Drilling Fiber-Cement Screw Combining a robust 3 HPSimpson #12 x 3" Self Drilling Hex Washer Head Screw in 316 Stainless Steel is a precision engineered fastener built for demanding applications where corrosion resistance is non negotiable. Featuring a #3 drill point that eliminates the need for pre drilling, this screw drives cleanly into aluminum and fiberglass materials, creating a secure, lasting connection. The indented hex washer head provides broad bearing surface and a reliable 5 16 in. hex