



🔩 Screw it right, screw it strong — outdoor projects made flawless!
The Simpson Strong-Tie SDWS22312DBB-R50 is a premium 3-1/2 inch structural wood screw featuring a patented SawTooth point for quick starts without predrilling, a deep 6-lobe T40 recess with included driver bit for secure fastening, and a durable anti-corrosion black DB coating designed specifically for outdoor use. Sold in a convenient 50-pack, it’s engineered for superior control and compatibility with Outdoor Accents decorative hardware.













| Material | Steel | 
| Head Style | Hex | 
| Exterior Finish | Anti-Corrosion Topcoat | 
| Thread Size | #10 | 
| Point Style | 4CUT | 
| Metal Type | Alloy Steel | 
| Brand | Simpson Strong-Tie | 
| Color | Plain | 
| Head Type | Hex | 
| Item Weight | 16 ounces | 
| Thread Type | Right Hand | 
| Thread Coverage | Partially Threaded | 
| Fastener Type | Wood Screws | 
| Set Screw Thread Type | Standard Wood Screw Thread | 
| Thread Style | Right Hand | 
| Thread Class | 2B | 
| Fastener Size | 3-1/2" | 
| Size | 3-1/2 Inch | 
| Item Diameter | 0.22 Inches | 
| Compatible groove diameter | 0.22 Inches | 
| Number of Pieces | 50 | 
| UPC | 707392897750 | 
| Global Trade Identification Number | 00707392897750 | 
| Manufacturer | Simpson Strong-Tie | 
| Part Number | SDWS22312DBB-R50 | 
| Item Weight | 1 pounds | 
| Item model number | 5005069 | 
| Is Discontinued By Manufacturer | No | 
| Finish | Powder Coated | 
| Shape | Cylindrical | 
| Item Package Quantity | 1 | 
| Cutting Diameter | 0.22 Inches | 
| Measurement System | Imperial | 
| Certification | An, As | 
| Special Features | Box of 50 | 
| Usage | Structural wood screw | 
| Included Components | hardware accessories, home improvement products | 
| Batteries Included? | No | 
| Batteries Required? | No | 
S**Y
Worth the cost
I needed to rebuild my deck and had always used lag bolts. I was reading on how these could help save time, look nicer and are stronger. Worth the cost in my point of view.
Z**E
Decorative Screws
Nice heavy screws
E**S
Worked as needed
Received and used
K**H
Perfect for pole barn
I'm using these to attach horizontal 2x6 and 2x8 to 4x6 posts to build an animal run-in shed. It's the perfect product for my application.
G**N
Saved the day
I had just purchased a box of these before a tornado hit our area. Luckily, the storm only removed the roof from our 80+ year old smokehouse. It was a scramble to find good solid wood to rebuild the frame of the smokehouse, but once located these screws did a great job of putting it all back together. Despite the abuse (Dewald cordless drill on max torque), I only managed to snap the head off one of the screws.Edit: Updated to 5 stars. I used another box of these to install Craftsman cabinets in my garage & they really worked well.
N**B
Great buy!!
These are amazing!! I wanted them, mainly for looks on a bunk bed I just build my son.. but I ended up using them for the entire build. They are strong and durable and do not strip.
G**.
Good screws, not really "used"
Great Simpson screws!I bought the "used" option. Of course, I didn't think that the screws themselves had been used, and there's no indication of that.OTOH, they are to be driven by a T40 bit, which was missing from the opened box.I think I can scare up a T40 bit, but it's a little bit (pun intended) of an inclined-plane-wrapped-around-a-cylinder.Still, a good buy of excellent screws.(Wonder if the censorbot will clear that!)
J**N
Amazingly easy to drive
Used these with STN22-8 washers, and they are crazy-easy to drive - they seem like the just slide into beams and posts, unlike typical lag screws. No splitting in the lumber being fastened, and no pre-drilling required.
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