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structural bolts
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Securing heavy timber and steel frameworks requires more than standard hardware; it demands structural bolts engineered for high shear strength and long-term stability. In the Home & Kitchen category, selecting the right fastener depends on the load-bearing requirements and environmental exposure of your project. Our selection focuses on material grade, corrosion resistance, and drive compatibility to ensure your construction remains safe and secure.
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LIONMAX Lag Screws 3 Inch, Structural Wood Screw #14 x 3, 50-PCS Heavy Duty Construction Screw, Rust Resistant, Washer Head, Black Coated Exterior Wood/Lag/Timber Screws, Star Drive with Bit

LIONMAX Lag Screws 3 Inch, Structural Wood Screw #...

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LIONMAX - LIONMAX Lag Screws 3 Inch, Structural Wood Screw #14 x 3, 50-PCS Heavy Duty Construction Screw, Rust Resistant, Washer Head, Black Coated Exterior Wood/Lag/Timber Screws, Star Drive with Bit
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  • DIMENSIONS & SUPERIOR STRENGTH: Thread Diameter 0.25" - Head Diameter 0.55" - Length 3" - Use with T30 Star Bit. Crafted from heat treated steel, LIONMAX heavy duty lag screws offer unmatched strength and reliability for long-lasting woodworking projects
  • ANTI-CORROSION COATINGS: The lag screws passed the 1000 Hour Salt Spray Test without coating failures. They come with double coatings that feature excellent protection against corrosion and rust, making them long-lasting even in harsh conditions
$9.99
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LIONMAX - LIONMAX Structural Wood Lag Screws #14 x 2-7/8 Inch, 50-PCS, Heavy Duty Exterior Construction Screw, Rust Resistant Coated for Deck/Timber/Landscape, Flat Head Star Drive, T30 Bit Included, Black
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  • INDUSTRIAL-GRADE DURABILITY: Crafted from carbon steel, LIONMAX wood screws withstand heavy loads and resist bending or shearing, providing rock-solid stability in wood structures like decks, sheds, or outdoor furniture
  • ANTI-CORROSION COATINGS: Construction lag wood screws passed the 1000 Hour Salt Spray Test. The black coating offers excellent protection against corrosion and rust, allowing them to be used even in humid climates, rainy environments, or salt-air coastal areas
$11.49
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BNUOK - BNUOK Lag Screws #14 x 6 Inch, (1lb, 20pcs) Heavy Duty Construction Structural Exterior Wood Timber Screws, Torx Drive Washer Head Rust Resistant Black Epoxy Coated, with T30 Star Bit
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  • Quantity & Size: You will get 1lb box (approx. 20pcs screws) #14 x 6" long lag screws concstruction wood screws, black, a T30 star bit
  • Rust Resistant: Our heavy duty lag screws are made from carbon steel and epoxy exterior black coating, with high hardness and great corrosion resistance, passed 2000h salt spray test, withstand the weather for outdoor use
$8.99
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FMhotu - #14 x 4 Wood Structural Screws 50 Pack Hex Head Lag Screws, Rust Resistant Timber Screws for Timber/Log/Landscaping Wood (Black)
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  • Quality Material: Crafted from premium alloy steel, these heavy-duty wood screws are engineered to endure and are compatible with ACQ-treated lumber, ensuring durability in varied outdoor conditions.
  • Rust-Resistant: Coated with a rust-resistant finish, these screws resist corrosion, extending their lifespan and making them ideal for long-lasting outdoor applications.
$19.84 20.89 USD
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FMhotu - #14 x 3 Wood Structural Lag Screws 54Pcs Star Drive Decking Screws, Rust Resistant Timber Screws for Timber/Log/Landscaping Wood
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  • DURABLE CONSTRUCTION: Crafted from premium carbon steel, our wood screws are built to last and are compatible with ACQ-treated wood for long-lasting performance.
  • RUST-RESISTANT COATING: With a 4-layers coating that has passed a rigorous 1000 Hour Salt Spray Test, our lag screws provide superior protection against corrosion and rust, ensuring durability in even the harshest conditions.
$10.49 11.05 USD
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Simpson Strong-Tie - Simpson Strong-Tie SD10112R100 - #10 x 1-1/2 Inch Strong Drive SD Connector Screws - 1/4 Inch Hex Head, Galvanized Coating, Hex Bit Included, for Construction, Home Improvement (Box of 100)
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  • NAIL REPLACEMENT: The Strong-Drive SD Connector #10 x 1-1/2 inch screw is specifically designed to replace nails in certain Simpson Strong-Tie connectors and is the only screw tested and approved for that application. The single-fastener load capacity of the #10 SD exceeds the capacity of a 16d common nail.
  • MECHANICALLY GALVANIZED COATING: The Strong-Drive SD Connector screw features a mechanically galvanized, Class 55 coating that provides superior corrosion resistance for long-lasting durability. This finish withstands harsh conditions, making it ideal for both interior and most exterior applications where protection against rust is essential.
$17.59
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DeTii - 5/16 x 12 inch Long Timber Screws,Heavy Duty Exterior Lag Bolts with Hex Head, Structural Wood Screws for Deck, Fence, Landscape & Gazebo,Rust-Resistant Green Coated, Sample Pack 6pcs
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  • Heavy-Duty for Outdoor Timber Projects Built for strength and durability, our Timber Screws easily handle decks, fences, raised garden beds, and heavy wood structures.
  • Self-Tapping Tip, No Pre-Drilling Needed Save time and effort โ€“ the self-tapping pointed tip drills in smoothly without splitting wood, even hardwoods.
$9.99
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Our Expert Verdict: structural bolts

AI
For most DIY deck and fence projects, coated structural screws offer the best value. However, for critical load-bearing frames, sticking to certified A325 heavy hex bolts is the only safe choice.

Market Overview: structural bolts

AI
The market is shifting toward high-torque star-drive structural screws that eliminate the need for washers and reduce installation time compared to traditional hex bolts.

Buying Guide: structural bolts

AI
When shopping for structural bolts, prioritize the material grade and the type of drive (Star, Hex, or Square) to prevent stripping during high-torque installation.

Selection Criteria

Products were selected based on verified user reviews, material certifications (such as A325), and the balance between bulk pricing and build quality.

Budget Advice

AI
Entry-level options include bulk coated screws, while mid-range to premium pricing is typically reserved for hot-dip galvanized, certified structural grade bolts.

Conclusion: structural bolts

AI
Choosing the right structural bolt can mean the difference between a project that lasts decades and one that fails prematurely. Review our full list to find the specific grade and coating suited for your build.

Frequently Asked Questions

AI
Structural bolts are engineered to meet specific load-bearing standards and shear strengths, often featuring heavier heads and specialized coatings to prevent failure under extreme pressure.
Hot-dip galvanized coatings generally offer superior long-term rust protection for exterior environments, while black epoxy or phosphate coatings provide a cleaner aesthetic and good resistance for decks.
While many modern structural screws are self-tapping, pre-drilling is often recommended for very hard woods or when using large-diameter bolts to prevent splitting the timber.

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LIONMAX Lag Screws 3 Inch, Structural Wood Screw #14 x 3, 50-PCS Heavy Duty Construction Screw, Rust Resistant, Washer Head, Black Coated Exterior Wood/Lag/Timber Screws, Star Drive with Bit
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LIONMAX Lag Screws 3 Inch, Structural Wo...

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