The Simpson Strong-Tie® Strong-Drive® SDWS22400DB .220" x 4" wood screw is specifically designed for structural wood-to-wood applications and is also ideal for a wide variety of projects where a high-strength attachment is needed. The 0.220" diameter of the SDWS22400DB 4" wood screw requires less torque to install than comparable fasteners, making it easier to drive. The Double-Barrier Coating corrosion-resistant coating makes it suitable for many interior and exterior applications. The low profile design of the SDWS screws makes it ideal when you want a structural connection that can also be installed with no protruding head like you would get with a standard hex head lag screw. The Strong-Drive® SDWS wood screw installs with a T-40 insert bit. The 6-lobe recess eliminates cam-outs so the screws installs quickly as well as maintains its original look.
- Bold thread design provides superior holding power
- Patented 4CUT® tip ensures fast starts, reduces installation torque and eliminates the need for pre-drilling in most applications
- Knurled shank section above the threads makes driving easier
- Under-head nibs offer greater installer control when seating the head
- Large head provides maximum bearing area
- Double-barrier coating provides corrosion resistance equivalent to hot-dip galvanization, making it suitable for many exterior and preservative-treated wood applications
- Available in lengths up to 10" for maximum versatility
- Deep, 6-lobe drive reduces cam-out, making driving easier
- Low-profile head design provides a clean look and less interference after installation
- T-40 drive tips are not included with individual screw purchases
Double Barrier Coating Information
The Simpson Strong‑Tie® double-barrier coating is a proprietary two-layer coating that provides a level of corrosion protection that is equivalent to ASTM A153 hot-dip galvanization in most non-marine exposures.
Level of Corrosion Resistance: Medium
Explanation of "Stock" Availability Term
Stock items are products we normally have available for immediate shipment either from our warehouse or our vendor's warehouse. If we or our vendor are out of stock or do not have enough inventory to complete your order we will notify you by phone or email as soon as possible. If you need an immediate inventory status update before you place an order please call our sales department direct at 800-323-2999 Monday through Friday 7:00AM - 4:00PM Pacific Time for this information.
Additional Simpson Strong-Tie Information
If there are any items on the
Simpson Strong-Tie Website that you do not see on the DHC Supplies website we will gladly special order them. Most special order Simpson items ship the same or next business day as long as there is stock available. Call us at 800-323-2999 for pricing and availability.
Possible Free Shipping! Orders (Continental USA Only) of Simpson Strong-Tie items only that total $2200.00 or more may ship free depending on location, type of business and the type of Simpson products required. Additional products will be charged standard shipping if applicable. Please call 800-323-2999 to see if your order qualifies.