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Description
Simpson Strong-Tie SWD22812DBB-R30 Strong-Drive (0.235" x 8-1/2") Double-Threaded Screw T40 Black (30 Pack)Simpson Strong Tie SWD22812DBB R30 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 SWD22812DBB R30 Includes (30) 0. 235 in. x 8 1 2 in. Double Threaded Wood Screw Simpson Strong Tie SWD22812DBB R30 Features Double threaded design for
Simpson Strong-Tie SWD22812DBB-R30 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 SWD22812DBB-R30 Includes
- (30) 0.235 in. x 8-1/2 in. Double-Threaded Wood Screw
Simpson Strong-Tie SWD22812DBB-R30 Features
- Double-threaded design for superior withdrawal resistance
- Unthreaded mid-shank for tight wood connections
- Black double-barrier coating for corrosion resistance
- Flush head design for a clean finish
- Precision engineered for consistent performance
Simpson Strong-Tie SWD22812DBB-R30 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 SWD22812DBB-R30 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 SWD22812DBB-R30 Specifications
| Diameter | 0.235 in. |
| Length | 8-1/2 in. |
| Material | Carbon Steel |
| Finish | Double-Barrier Coating |
| Color | Black |
| Drive Type | T40 6-Lobe |
| Head Diameter | 0.394 in. |
| Head Type | Cylinder Head |
| Point Type | Screw Chisel Point |
| Thread Length | 3-3/4 in. |
| Thread Type | Double Thread |
| Shank Style | Unthreaded Mid-Shank |
| Quantity | 30 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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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
4.7 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Great product
Style: 16 oz
Worked as advertised. I would order again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
★★★★★ 5
Fixes flats and old tires like a charm
Style: 1 gal
This stuff is awesome. If you have tractor tires, ATV tires, bike, tires, hell, any tires that hold air. This stuff is awesome. Awesome. Awesome. It does not work for highway vehicles, i.e. Cars and truck trucks. But anything else it’s great. Dollies, air compressors, wheelbarrows, the stuff is awesome dude.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
slime is and has always been amazing for bike tires and other small pneumatic tires
Style: 1 gal
this is a great value, I have been using slime in my tubes of my bikes and a small inflatable pneumatic tires for probably 30 years, and I can say slime has only improved, and it works fantastic, this is a very good way to save money, and it works great on goat heads and several other ways your tires can get punctured, I still always recommend carrying a small air compressor or pump, but for the price point you just cannot beat slime, every bike shop should always carry this.
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Reviewed in the United States on April 18, 2026
★★★★★ 3
They need to find a better way to ship it
Style: 1 gal
What was left in the bottle worked great. However, the cap was off of the jug when I opened the package. Ididn't have enough for the other tires.
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Reviewed in the United States on March 19, 2026
★★★★★ 5
TireJect Product Featured on Youtube Channel "sixtyfiveford" Works Fantastic!
Size: 8oz MTB Tire Sealant Kit, Size: 8oz MTB Tire Sealant Kit
I recently had an opportunity to work on an old Troy-Bilt Snow Blower with a Carlisle Stud Bias Tire - 4.80-8 4 that had a continual leak and would not hold pressure for more than a day. After investigation, I discovered that it "Champagne" sized bubbles coming from an area on the sidewall that I circled in yellow "China" marker. Because of the size of the tire, I decided to purchase the "TireJect Mountain Bike (MTB) Tire Sealant Kit because I didn't require a lot of material to seal the tire. The TireJect Mountain Bike (MTB) Tire Sealant Kit came with an single 8oz container and I used 4 of those 8oz's in this single tire. The TireJect material sealed up the area beautifully. After the sealant cured, I was able to pump up the tire to 15PSI and it has held it's pressure for more than a week now. You can see from the photos, that the sidewalls in that yellow circled area were actually cracked (probably due to the tire sitting flat for more than a year). I highly recommend this product over previous products I have used in the past (Slime).
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Reviewed in the United States on October 3, 2025