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Description
Simpson Strong-Tie SWD18312DBB-R50 Strong-Drive (0.180-in x 3-1/2-in T30) SWD Double-Threaded Screw Black (50 Pack)Simpson Strong Tie SWD18312DBB R50 Description The Strong Drive SWD Double Threaded Screw is a high performance structural fastener engineered for exterior wood to wood applications, featuring a corrosion resistant double barrier coating and a low profile head for a clean finish. Simpson Strong Tie SWD18312DBB R50 Includes (50) Double Threaded Wood Screw Simpson Strong Tie SWD18312DBB R50 Features Double thread design for superior withdrawal
Simpson Strong-Tie SWD18312DBB-R50 Description
The Strong-Drive SWD Double-Threaded Screw is a high-performance structural fastener engineered for exterior wood-to-wood applications, featuring a corrosion-resistant double-barrier coating and a low-profile head for a clean finish.
Simpson Strong-Tie SWD18312DBB-R50 Includes
- (50) Double-Threaded Wood Screw
Simpson Strong-Tie SWD18312DBB-R50 Features
- Double-thread design for superior withdrawal resistance
- Unthreaded mid-shank for tight wood connections
- Corrosion-resistant double-barrier coating
- Low-profile head for a clean, flush finish
- Precision engineered for consistent performance
Simpson Strong-Tie SWD18312DBB-R50 Applications
- Deck ledger attachments to rim joists
- General exterior wood framing
- Pergolas, porches, and outdoor structural assemblies
- Wood-to-wood connections requiring high withdrawal strength
Simpson Strong-Tie SWD18312DBB-R50 Installation Overview
- No pre-drilling required in most applications
- Use with a standard driver or impact driver
- Drive the screw until the head is flush with the wood surface
- Compatible with treated lumber following coating guidelines
Simpson Strong-Tie SWD18312DBB-R50 Specifications
| Diameter | 0.180" |
| Finish | Double-Barrier Coating |
| Length | 3-1/2" |
| Material | Carbon Steel |
| Color | Black |
| Drive type | T30 6-Lobe |
| Head diameter | 0.315" |
| Head type | Cylinder Head |
| Point type | Screw Chisel Point |
| Quantity | 50 |
| Shank style | Unthreaded Mid-Shank |
| Thread length | 1-5/8" |
| Thread type | Double Thread |
NOTE: Ensure screws are installed straight into the side grain of the wood main member with the screw axis at a 90 Degree angle to the wood fibers.
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
4.3 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 3
Generous amount and is a good sunscreen
Size: 3 Fl Oz (Pack of 1)
Goes on with a slightly white cast, but it’s cost effective. If they could only get rid of the white cast! Doesn’t pill under makeup, or over. can try mixing together with liquid foundation to eliminate white.
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Reviewed in the United States on December 19, 2025
★★★★★ 5
Yes!
Size: 3 Fl Oz (Pack of 1)
This was a suncreen reccomended to me by my dermentologist. I absoulutly love it! It sits well under my makeup! I usally do a soft glam everyday and I apply foundation 6 out of the 7 days of the week. It helps my skin look glowy too! It hydrating for my acne prone,dry, super sensitive skin. No white cast! And it doesn't smell. I've tried over 50 dollar sunscreens but this one is the best! I also live in Texas so sunscreen is a must and I live a active lifetsyle going to college everyday.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
★★★★★ 5
Go-To for Reef-Safe & Light-Weight Sunscreen
Style: SPF 50 Roll On, Size: 3 Fl Oz (Pack of 1)
Favorite sunblock to travel with. Appreciate the simplicity of it, and the fact that it rolls on and rubs in smooth. Of course the iconic scent is also a plus.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
Great choice
Style: SPF 50 Roll On, Size: 3 Fl Oz (Pack of 1)
After I suffered a second-degree burn from steam, I was told by my doctor that I would have to keep my new fresh skin sun-blocked for up to a year to avoid any scarring or hyper pigmentation. This has been a great selection as it is a roll-on, Which helps a lot with preventing messes that can happen with traditional sunblock bottles. I also like that it is easy to travel with, and the fact that it is zinc based.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 26, 2025
★★★★★ 5
My favorite new mineral sunscreen!
Style: SPF 50 Roll On, Size: 3 Fl Oz (Pack of 1)
This is my favorite new mineral sunscreen! I've been searching for years for a product that is easy to apply, not messy, and doesn't show up too white. This roll-on is the perfect solution. I keep it near the front door and quickly roll the sunscreen on my hands, arms, and chest before leaving the house. The sunscreen applies so quickly and uniformly-- there are no bare spots or messy globs to rub in. Also, the roll-on keeps the sunscreen from oozing out of the tube and getting all over everything. Finally, the roll-on method also eliminates the frustration of having half-filled tubes and pumps where you can't even access the sunscreen when the tube gets low. Here's hoping this doesn't happen with the roll-on. Thank you Sun Bum for creating this wonderful product. I also love the reasonable price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 24, 2025
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