Whether you’re building a backyard deck, attaching heavy lumber, or securing outdoor structures, 70PCS Hex Head 1/4-20x2" Lag Bolts save you repeated trips to the hardware store. Made from marine-grade 304 stainless steel, these wood screws resist rust and corrosion far better than ordinary coated bolts. The sharp hex head bites into wood cleanly, and the partial-thread design locks two pieces of timber firmly without splitting. No more stripped heads or bent shanks – this kit gives you reliable holding power for both professional job sites and weekend DIY projects.
🔩 Why Choose These Stainless Steel Lag Bolts?
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304 Stainless Steel construction – Provides superior corrosion resistance and anti-rust performance compared to regular screws. Perfect for humid, coastal, or outdoor applications.
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Precise 1/4"-20 x 2" dimensions – Each lag bolt has a consistent diameter and length, with a 7/16" external hex drive (wrench not included). No eccentric heads, no deformation under load.
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High strength & anti-slip design – The hex head allows maximum torque transfer, reducing cam-out. These lag screws won’t easily break or bend during installation.
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70-piece value pack – Enough fasteners for medium to large woodworking jobs: fence repairs, gate hinges, playground sets, or joining 2x4 lumber.
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Partial thread for wood joining – The unthreaded shank near the head pulls two workpieces tight together, creating a stronger mechanical bond than fully threaded screws.
📐 Technical Specifications
| Product Type |
Wood Screws – Partial Thread |
| Material |
304 Stainless Steel |
| Head Style |
Hex Head (External Hex) |
| Drive Size |
7/16" Wrench (not included) |
| Screw Size |
1/4"-20 x 2" |
| Thread Diameter |
1/4 inch |
| Overall Length |
2 inches |
| Thread Coverage |
Partial (smooth shank near head) |
| Quantity |
70 pieces |
| Packaging |
Sturdy box |
| Color |
Silver (natural stainless) |
| System of Measurement |
Inch |
❓ Frequently Asked Questions
Q: Can these lag bolts be used in pressure-treated lumber?
A: Absolutely. The 304 stainless steel is highly resistant to the corrosive chemicals found in modern pressure-treated wood (ACQ, CA, etc.). Unlike zinc-coated lag screws, stainless won’t prematurely rust or stain the wood.
Q: Do I need to pre-drill before installing these 1/4" lag bolts?
A: Yes, for best results and to prevent splitting, we recommend drilling a pilot hole using a 3/16" drill bit (or a bit slightly smaller than the bolt’s root diameter). Pre-drilling also makes driving easier and ensures the hex head sits flush.
Q: Is the 7/16" wrench included? What tools do I need?
A: The wrench is not included. You’ll need a standard 7/16" hex socket, combination wrench, or a nut driver. A cordless impact driver with a 7/16" hex socket makes quick work of driving these lag screws into wood.
Q: What’s the difference between a lag bolt and a regular wood screw?
A: Lag bolts (or lag screws) have a thicker shank and a hex head, designed for heavy-duty structural applications where ordinary wood screws would shear. They’re ideal for deck ledgers, beam attachments, and framing. The partial thread pulls the top piece tight against the base material.
Q: Can I use these outdoors in a coastal environment?
A: Yes, 304 stainless steel offers good salt-spray resistance for most residential coastal applications. For constant immersion or extreme marine environments, 316 stainless would be better, but these 304 lag bolts will outperform standard galvanized screws by a wide margin.
