Self-Drilling Siding Screw 

Key Features

• Trim head.
• Threaded 2/3 of overall length.
• #3 drill point.
• #1 square drive (replacement bit model BIT1S-2).
• 1 1/4" and 1 5/8" models are fully threaded.
• 1 1/4" models are black xylan coated.
• 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.

Applications

• Attach wood siding, wood panels and metal trim to steel studs

Warning

• 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

Ordering Information

• These products are subject to quantities on hand or may require special ordering and are subject to minimum order quantities and longer lead times. Call Simpson Strong‑Tie for details (800) 999-5099.

Related Links

• Fastening Systems Technical and Installation Notes
• See How Self-Drilling Screws Work for more information on drilling thickness capacities and drill speed recommendations
• Driver Bits

Catalog Pages

• C-F-2017 (Fastening Systems), page 108