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Description
Simpson Strong-Tie SDWH19400SS-R20 Strong-Drive (0.185" x 4") SDWH Timber-Hex SS Screw,Type 316 (20 Pack)Simpson Strong Tie SDWH19400SS R20 Description Strong Tie SDWH Stainless Steel Timber Screws are designed for lag screw replacement. The Type 316 stainless steel structural wood fasteners require no pre drilling, making them easier and faster to install than typical lag screws. Ideal for use in marine or wet environments that require a severe level of corrosion resistance. Simpson Strong Tie SDWH19400SS R20 Includes (20) 0. 185" x 4" Timber Hex Screw
Simpson Strong-Tie SDWH19400SS-R20 Description
Strong-Tie SDWH Stainless Steel Timber Screws are designed for lag-screw replacement. The Type 316 stainless-steel structural wood fasteners require no pre-drilling, making them easier and faster to install than typical lag screws. Ideal for use in marine or wet environments that require a severe-level of corrosion resistance.
Simpson Strong-Tie SDWH19400SS-R20 Includes
- (20) 0.185" x 4" Timber-Hex Screw
Simpson Strong-Tie SDWH19400SS-R20 Features
- Type 316 stainless steel for maximum corrosion protection
- No predrilling necessary in most applications
- Driver bit included
- Can be used in ledger applications
- Unique box thread design with raised-ridge technology significantly reduces driving torque
- Hex-washer head provides large bearing area
Simpson Strong-Tie SDWH19400SS-R20 Applications
- Structural wood-to-wood and engineered-wood connections, including ledger
- Marine or wet environments requiring severe corrosion resistance
Simpson Strong-Tie SDWH19400SS-R20 Specifications
| Diameter | 0.188" |
| Length | 4" |
| Material | 316 Stainless Steel |
| Drive type | 5/16" Hex |
| Point type | Sharp |
| Quantity | 20 |
| Thread length | 2.40" |
NOTE: The correct fasteners installed in the correct position must be used to achieve published load values.
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- Free Standard Shipping on $100+ Orders to the USA.
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4.9 ★★★★★
Based on 1902 reviews
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Product Reviews
★★★★★ 5
premium feel in the hand.
Can't really say whether it's that good or not elecronics wise since I didn't test it but it works like it's supposed to. Meanwhile, the housing oh man. It's premium. It feels like hard aluminum or something, very nice. Edges are rounded too with just the right sharpness like a macbook. Others would've been plastic. This is really nice for the price and if the specs really are 10Gbps, that's really good because most in this price range is 5Gbps.
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Reviewed in the United States on March 2, 2026
★★★★★ 1
Failed to support desktop PCs with USB 3.2 Gen 2 ports
Does not work with my HP mini PC with USB 3.2 gen 2 ports - when connecting USB portable SSDs to the hub.
You won't believe it, but many USB 3.2 Gen 2 hubs only support laptops not desktop PCs (except hubs that have dedicated power supply for higher power USB devices e.g. SSD/HDDs) when connecting USB portable SSDs to the hub.
We need a major fix from many of the USB hub vendors so these products can work with desktop PCs that have USB 3.2 Gen 2 ports.
Workaround:
Just directly connect the USB portable SSD to the PC instead.
If you need more USB ports, pick up a good old USB 3.0 hub. They're working correctly with portable USB SSDs when working with desktop PCs.
(You'd need a powered USB hub if you're connecting 2 or more portable SSDs - do your own calculation: 5V - 1A per SSD/HDD).
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Reviewed in the United States on November 2, 2025
★★★★★ 5
Perfect for ROG Ally X
Want to hook up a keyboard, mouse, headset, AND external display to a ROG Ally X? This will do it and it only takes up one (USB4) port on the Ally X. Oh, and it will also provide enough power to charge the Ally and still have juice for all the other ports.
Update: I’ve now tried a few USB4 hubs because I also want Ethernet which this doesn’t have. Unfortunately I’ve discovered that most of them seem to overheat after awhile and I loose connectivity on some of the ports (for whatever reason it’s always the type A ports on the hubs that fail). After letting them cool down, the other USB hubs work again, but it’s still frustrating. This StarTech hub is the only one that works for hours. It’s a little bulkier than other hubs I’ve tried, but that’s probably because it needs to be that way for proper heat dissipation?? Anyway, I wish it had a few more ports (including Ethernet), but for reliability this thing is the best I’ve found.
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Reviewed in the United States on July 31, 2024
★★★★★ 5
The Best!
This thing is amazing! Worked right out of the box. No drivers to install, no confusion, just plug and go. I'm using this hub to connect a mouse, a keyboard, and a monitor to my 2025 MacBook Air (M4).
Before buying this I bought a complicated, powered hub for 2x the price and wasted multiple hours trying to get the $%^&(*& thing to work, which it never did. If you want to run a display and a few peripherals, this Startech hub is the absolute best bang for your buck.
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Reviewed in the United States on December 8, 2025
★★★★★ 1
Quality Control Issues
I want to like this dock, I really do. I purchased it with the intention of using it as a hub for my phone + usb-c external display.
The pass-through charging never worked on this dock. Tried multiple cords and tested the dock with nothing plugged into any of the USB ports -- all of the power disappears somewhere onto the hub and the actual charge rate on my phone slows to a trickle. With nothing connected, it estimates >24hrs to charge from 30% to full.
The plus side is that the usb ports do work, though the usb-c display went from 100% reliability to <50% within a few months of purchase. Extremely frustrating.
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Reviewed in the United States on September 24, 2024