Lag Screws 5 Inch, 25PCS Heavy Duty Construction Screw, Structural Wood Screw #14 x 5, Rust Resistant, Washer Head, Yellow Coated Exterior Wood/Lag Screws, Star Drive with Bit

Lag Screws 5 Inch, 25PCS Heavy Duty Construction Screw, Structural Wood Screw #14 x 5, Rust Resistant, Washer Head, Yellow Coated Exterior Wood/Lag Screws, Star Drive with Bit

Name: Lag Screws 5 Inch, 25PCS Heavy Duty Construction Screw, Structural Wood Screw #14 x 5, Rust Resistant, Washer Head, Yellow Coated Exterior Wood/Lag Screws, Star Drive with Bit
Brand: HomeDIYer
SKU: GBTST0051
Price: 14.5 USD
Availability: InStock

$14.50 USD $25.00 USD

Spare 42%

Auf Lager

Provided by HomeDIYer

Menge:

DIY Expert Support

Get fitment advice & recommendations

Mon-Fri, 8:30AM-8PM

WhatsApp Email

⚡

24-Hour Fast Ship

🚚

Arrives in 2-7 days

🏚️

US Warehouse

↩️

30-Day Returns

🌱 1 tree planted with every purchase

✔️ 1000-Hour Salt Spray Test | Yellow Anti-Corrosion Coating | Includes T30 Bit

When you’re building a heavy-duty deck, sturdy timber frame, or any outdoor structure that demands long-term reliability, the GOOBETTER 5-inch lag screws (25-pack) give you the extra length and holding power required for thick lumber and multi-ply beams. Designed for contractors, carpenters, and passionate DIYers, these #14 x 5 structural wood screws eliminate the need for oversized lag bolts — offering a one-step solution with a T30 Star drive and knurled shank that reduces torque and prevents wood splitting. The high-visibility yellow corrosion-resistant coating withstands 1000 hours of salt spray testing, so you can trust them in rain, humidity, and harsh outdoor conditions. Say goodbye to stripped heads and rusted fasteners; get a flush finish with every drive.

⚡ Why Pros Choose These 5-Inch Structural Screws

✅ 1000h salt spray resistant – yellow coating stands up to coastal & wet environments
✅ T30 Star drive → zero cam-out / no slipping under load
✅ Knurled shank reduces drilling torque & prevents splitting in dense lumber
✅ Modified truss washer head leaves a flush, professional surface
✅ Includes 1 T30 Star drive bit + reusable, eco-friendly storage box

🔧 Key Features of 5 Inch Heavy Duty Structural Wood Screws

🟡

Premium Yellow Anti-Corrosion Coating
Passed 1000-Hour Salt Spray Test with zero coating failure. The high-visibility yellow coating not only provides outstanding rust protection but also makes it easy to spot fasteners during inspection. Ideal for exterior decks, docks, and ground-contact applications.

⚙️

T30 Star Drive + Knurled Shank
The Star drive system eliminates cam-out and bit slippage, giving you a safe, efficient fastening process even in tight spots. The knurled shank reduces insertion torque and prevents hairline cracking in hardwoods and pressure-treated lumber.

🏗️

Wide Application – Outdoor & Structural
Perfect for deck building, log construction, timber framing, pole barns, fencing, heavy shelving, and exterior furniture. The 5-inch length provides extra reach through doubled 2x lumber and thick beams.

🔩

Modified Truss Washer Head & Star Drive
The modified truss washer head sits flush against the surface, creating a clean, finished look and preventing pull-through. Combined with the T30 drive, installation is smooth, secure, and professional-grade.

📦

GOOBETTER Quality & Eco-Friendly Packaging
Each box contains 25 lag screws and 1 T30 star drive bit. The packaging uses environmentally friendly reusable materials that save storage space and reduce waste — no bulky plastic clamshells.

📐 Technical Specifications – 5 Inch Lag Screws #14 x 5 (Yellow Coated)

Size (Length)	5 inches (127 mm)
Thread Diameter	#14 (Heavy Duty, 1/4 inch major diameter approx.)
Quantity per Box	25 pieces + 1 T30 star drive bit
Head Type	Modified Truss Washer Head – flush finish
Drive Style	T30 Star Drive (Torx style, bit included)
Coating	Yellow Anti-Corrosion Coating, 1000H Salt Spray Test passed
Material	Heat-treated carbon steel for high shear/tensile strength
Recommended Use	Decking, timber framing, log homes, pole barns, exterior furniture, fencing, heavy wood joinery
Included Accessories	1 x T30 star drive bit, reusable storage box

❓ Frequently Asked Questions – 5" Lag Screws for Wood & Construction

🔹 Do I need to pre-drill for these 5-inch structural wood screws?

Thanks to the knurled shank design, these screws require less torque and greatly reduce the risk of splitting. For most softwoods and pressure-treated lumber, you can drive them directly. For extremely dense hardwoods (like oak, hickory) or when fastening close to board edges, we recommend a pilot hole about 1/8" smaller than the screw diameter. The T30 star drive makes driving effortless.

🔹 How does the yellow coating hold up against rust and weather?

The yellow coating has passed a rigorous 1000-hour salt spray test without blistering or corrosion. This means it provides excellent protection even in coastal areas, humid environments, and direct contact with treated lumber chemicals. You can expect long-term durability without red rust streaks.

🔹 Are these screws strong enough for load-bearing timber framing and deck ledgers?

Absolutely. These #14 x 5 structural screws are made from heat-treated carbon steel, offering high shear strength comparable to traditional lag bolts but with easier installation. They meet heavy-duty construction requirements for ledgers, beam connections, and post-to-beam applications. For engineering-specific loads, always follow local building codes.

🔹 Does the box include the T30 driver bit? Can I use a standard impact driver?

Yes, each box comes with one T30 star drive bit. These screws are compatible with standard impact drivers and drill drivers. The star drive design ensures no stripping, even under high torque applications. For best results, we recommend using a quality impact driver on setting 2 or 3.

🔹 Can I use these 5-inch lag screws for pressure-treated wood and ground contact?

Yes, the yellow anti-corrosion coating is specifically formulated for treated lumber and exterior ground-contact applications. They are resistant to the chemicals used in ACQ and CA treated wood, making them perfect for raised garden beds, fence posts, and deck substructures. For continuous soil contact, we still recommend proper drainage.