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Description
Simpson Strong-Tie SWD221034DBB-R30 Strong-Drive (0.235-in x 10-3/4-in) Double-Threaded Screw,T40 Black (30 Pack)Simpson Strong Tie SWD221034DBB R30 Description The Strong Drive SWD Double Threaded Screw is a high performance structural fastener engineered for exterior wood to wood applications, including deck ledgers and general framing. Simpson Strong Tie SWD221034DBB R30 Includes (30) Double Threaded Wood Screw Simpson Strong Tie SWD221034DBB R30 Features Professional grade engineered for strength, versatility, and reliability Double thread design and smooth
Simpson Strong-Tie SWD221034DBB-R30 Description
The Strong-Drive SWD Double-Threaded Screw is a high-performance structural fastener engineered for exterior wood-to-wood applications, including deck ledgers and general framing.
Simpson Strong-Tie SWD221034DBB-R30 Includes
- (30) Double-Threaded Wood Screw
Simpson Strong-Tie SWD221034DBB-R30 Features
- Professional grade engineered for strength, versatility, and reliability
- Double-thread design and smooth mid-shank pull members together securely
- Black, exterior-grade, double-barrier coating for corrosion resistance
- Chisel point provides easy driving for angled installation and reduced splitting
- Compact cylinder head design for low visibility, concealed installations
- 6-lobe driver bit for secure driving
- Code listed and load rated for structural applications
Simpson Strong-Tie SWD221034DBB-R30 Applications
- Deck ledger attachments to rim joists
- General exterior wood framing
- Pergolas, porches, and outdoor structural assemblies
- Wood-to-wood connections where high withdrawal strength is required
Simpson Strong-Tie SWD221034DBB-R30 Installation Overview
- No pre-drilling required in most applications, thanks to its screw chisel point
- Use with a standard driver or impact driver
- For best results, drive the screw until the head is flush with the wood surface—avoid overdriving
- Can be used with treated lumber, following coating compatibility guidelines
Simpson Strong-Tie SWD221034DBB-R30 Specifications
| Diameter | 0.235" |
| Finish | Double-Barrier Coating |
| Length | 10-3/4" |
| Material | Carbon Steel |
| Color | Black |
| Drive type | T40 6-Lobe |
| Head diameter | 0.394" |
| Head type | Cylinder Head |
| Point type | Screw Chisel Point |
| Quantity | 30 |
| Shank style | Unthreaded Mid-Shank |
| Thread length | 4-1/4" |
| Thread type | Double Thread |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Great for hand pain while working out.
Color: Wild Spruce, Style: 1/2 inch
Not squeaky, non slip. Much thicker and comfier than a normal yoga mat. Only thing is wearing sneakers on it, it might give you some more squeak. Just wipe down with a wet wipe after class. Keep it in my car. Purple color is perfect- muted yet a statement. Goes with all my clothes/towels.
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Reviewed in the United States on May 9, 2026
★★★★★ 4
Lightweight yoga mat
Color: Rose, Style: 1/2 inch
The yoga mat is not one of those heavy-duty ones. It’s quite light, but it tends to crease easily and takes a long time to return to its original shape after being rolled or folded.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Great Mat!
Color: Boysenberry, Style: 1/2 inch
I’ve been using this mat 4+ days a week for 2.5 months and it is durable and comfortable. I use it for yoga, sculpt, and Pilates. It’s held up during burpees, pushups, and plenty other moves that I half expected would tear the mat, but it’s held up great. It also gets wiped down with a disinfectant after each use. Still like new. Great price too!
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Comfortable material, perfect size, and matches the online images!
Color: Blue Mist, Style: 1/2 inch, Color: Blue Mist, Style: 1/2 inch
This Retrospec Solana Yoga Mat is super cushiony and soft, and perfect if you're looking for something with extra thickness. The size was just what I was looking for, and I'm looking forward to using it on my concrete back porch! Comfort level 5 out of 5!
I really love the color quality of this, too. I've had several yoga mats in the past, and this one is one of the prettiest blues. The color quality was true to the product description and matched the online images.
Unboxing: It was super easy to roll out, and the packaging kept it safe from any damage.
Note: Upon opening it, it had that kind fo funky fresh-out-of-the-box smell, but it went away within just a few days.
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Love it!!
Color: Rose, Style: 1/2 inch, Color: Rose, Style: 1/2 inch
i saw a lot of bad reviews after i had ordered this product so i was a little scared, but it did come with the strap to secure it which i love keeps it all rolled up together, it’s not slippery at all i also saw reviews about that the ribbed design is a bit different to my liking but it’s still very comfortable, it kind of reminds me of memory foam. The color is such a muted pink but so pretty and it’s very lightweight!! it’s definitely worth the money very good quality
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Reviewed in the United States on February 23, 2026
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