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Description
Simpson Strong-Tie SDWH27400G Strong-Drive (0.276" x 4") SDWH Timber-Hex HDG Screw (350 Pack)Simpson Strong Tie SDWH27400G Description The Strong Drive SDWH Timber Hex HDG Screw is a heavy duty structural fastener designed for wood to wood connections, featuring a hot dip galvanized coating for durability in coastal and marine environments. Simpson Strong Tie SDWH27400G Includes (350) Strong Drive SDWH Timber Hex HDG Screw Simpson Strong Tie SDWH27400G Features 0. 276" shank diameter for heavy duty structural applications ASTM A153 Class C
Simpson Strong-Tie SDWH27400G Description
The Strong-Drive SDWH Timber-Hex HDG Screw is a heavy-duty structural fastener designed for wood-to-wood connections, featuring a hot-dip galvanized coating for durability in coastal and marine environments.
Simpson Strong-Tie SDWH27400G Includes
- (350) Strong-Drive SDWH Timber-Hex HDG Screw
Simpson Strong-Tie SDWH27400G Features
- 0.276" shank diameter for heavy-duty structural applications
- ASTM A153 Class-C hot-dip galvanized coating suitable for coastal and marine environments
- SawTooth point design for fast starts and no predrilling
- Oversized 0.93"-diameter integral washer eliminates the need for a separate washer
- 3/8" hex drive for secure driving
- Ideal replacement for spikes, lag bolts, and lag screws
Simpson Strong-Tie SDWH27400G Applications
- Structural wood-to-wood connections
- Engineered wood applications
- Ledger and pile connections
Simpson Strong-Tie SDWH27400G Installation Overview
- Use a minimum of 1/2" low-speed corded drill for installation
Simpson Strong-Tie SDWH27400G Specifications
| Fastener Type | Hand-Drive Screw |
| Application | Fastening Wood-to-Wood |
| API Approval | Approved - Full |
| Length (in.) | 4 |
| Shank Diameter (in.) | 0.276 |
| Drive Type | 3/8 in. Hex |
| Head Type | Large Hex Washer Head |
| Thread Type | Serrated Threads |
| Thread Length (in.) | 3 |
| Point Type | SawTooth Point |
| Coating/Material | Hot-Dip Galvanized, Class C |
| Packaging Quantity | 350 |
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.4 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 4
Comfortable and Supportive, but Adjust the Filling
Color: White-cooling Basic, Size: Queen(Pack of 2), Color: White-cooling Basic, Size: Queen(Pack of 2)
I’m very happy with this pillow. The size is big and it feels soft while still providing good support, perfect for midnight scrolling on TikTok.
One thing to keep in mind is that it can feel a little too tall if you use all of the filling that comes with it. The good news is that you can easily adjust the amount of filling to find the height that works best for your sleeping position. Once I customized it, it was much more comfortable.
Overall, great quality, comfortable, and worth the purchase.
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Reviewed in the United States on June 3, 2026
★★★★★ 5
BEST PILLOWS EVER!!!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I am very picky with my pillows because I have a bad neck and I can never seem to find a good pillow. But I tried this pillow because it had everything I was looking for and the price was great! You get two of them and they are absolutely awesome.! normally I would need to lay on two pillows to try and get comfortable but with these pillows I just lay on one and I wake up with no neck pain. They really have a nice cooling effect. They actually puff up immediately after opening them. All you have to do is just shake them up and the pillow just puffs straight up.. It comes with extra cushioning if you want it to make it firmer and if you don’t want it as firm as it is, you can actually take some out. It really is such a beautiful pillow. It’s perfect in every way to me being such a picky pillow person.
You just lay your head down on it and it forms around your neck and your head and when you get up, it goes right back to its normal form. It doesn’t get flat and I love it. I completely recommend this to anyone who is a person who has a hard time finding a really good pillow.
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Reviewed in the United States on April 12, 2026
★★★★★ 5
Top of the line, best pillows Ive ever had
Color: White-cooling Basic, Size: Queen(Pack of 2)
These pillows are top of the line! I bought them in 2024 and they are still fluffy. When they lose a little fluff, you just punch em around a little bit and voila, like new again. They have kept their shape cery well and do great for cooling. I haven't had to add more filling yet either. I just laid my head on one and thought, I need to do a review cause everytime i lay on these pillows its like clouds. My head is heavy and this is relief :-D
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Reviewed in the United States on May 21, 2026
★★★★★ 3
Weird smell
Color: White-cooling Basic, Size: Queen(Pack of 2)
The pillows are great for someone looking for something cool and comfortable. We loved them so much that we bought a second pair. However, we were seriously disappointed with the odor of our last purchase. They give off a strong and indescribable chemical/burning plastic smell so nauseating that it’s difficult to sleep with. We’re hoping this issue will resolve with a couple more washes of the pillow cases, but am worried the source is the stuffing itself.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
helped treat my sore neck
Color: White-cooling Basic, Size: Camping Pillow(Pack of 1)
This pillow — after dialing in the right amount of shredded foam — has greatly helped my sore neck. Initially, I had to remove some foam. Then I gradually added foam until it reached optimum comfort and support.
It is also CPAP-friendly — especially when I position my head near the pillow's edge. (I am a left-side sleeper.)
I like the travel size because I use a bulky hugging pillow to ease stress on my shoulder and elbow. That makes my side of the bed feel cramped if using a larger head pillow. A smaller pillow is easy to flip end-to-end in the middle of the night.
I have spent lots of money on pillows over the years, but this is the best I've ever had for relieving [1] neck pain and [2] CPAP mask seal problems. Very comfortable, supportive, and affordable.
I did not notice any unpleasant smell — and I am usually sensitive to that kind of thing.
Would highly recommend.
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Reviewed in the United States on May 7, 2026