• These products are subject to quantities on hand or may require special ordering and are subject to minimum order quantities and longer lead times. Please call us at 888-794-1590 for details.

Simpson Self-Drilling Siding Screws features include a trim head, #3 drill point and utilize a #1 square drive (replacement bit model BIT1S-2-R2). Applications for this screw include attaching wood siding, wood panels and metal trim to steel studs.

Please note, 1-1/4" and 1-5/8" models are fully threaded; other sizes are threaded 2/3 of overall length.

Type 410 stainless steel can be hardened through heat treatment, giving it the ability to drill through metal. It does not offer the same level of corrosion resistance of either Type 316 or 305 stainless steel. Hardened stainless-steel fasteners should not be used with steel framing in environments with high humidity, condensation or other moisture that will be present at the dissimilar metal interface.

California Residents: WARNING