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The Ideal Construction Lag Screws
- Replaces traditional 5/16" or 3/8" lag bolts with no predrilling required
- Achieve up to 50% faster installation, significantly reducing labor costs and physical effort
- Sharp points and aggressive threads help penetrate dense woods and provide strong shear values
- Ideal for fastening exterior deck ledgers, fences, stair stringers, landscaping timbers, and more in wood-to-wood outdoor construction
- Tapered heads countersink easily into wood
- 2" of thread for greater holding strength
- Includes 50PC 4 inch wood screws with hex head, and 1PC hex driver bit
- No Pre-drilling Needed
- Prevents Wood Splitting
- Fast Penetration into Dense Wood
- Superior Structural Connections
- Maximum Grip Strength
- Heavy-duty Load Handling
- Debris Ejection
- Reduced Driving Torque
- Smoother Installation
- Powerful Torque Transfer
- Enhanced Load Distribution
- Stable, Efficient Fastening
Our structural wood screws are crafted from heat-treated steel, providing exceptional shear and pull-down strength without bending or breaking
The advanced triple-layer coating ensures superior corrosion resistance, making them ideal for exterior freshwater construction and pressure-treated timber applications
This all-weather rust protection extends the longevity of your project
Timothy Blum
Reviewed in the United States on March 24, 2025
Heavy duty construction lag screws. Well-made and sturdy. Includes hex bit.
Customer
Reviewed in the United States on February 6, 2025
These screws are exactly what I needed for my project!
R. Moheban
Reviewed in the United States on December 19, 2024
Back years ago when I was building decks and railings, code dictated that framing members be joined with bolts&nuts or metal plates such as joist hangers. Non-structural members such as floor decking were attached with "deck" screws that were typically as long as the thickness of the member plus an inch or so. If screws like these beefier quarter-inch-thick "structural" screws existed 25 years ago, I was not aware of them nor did I see them in home improvement stores. I saw lots of types of deck screws, typically #10 or #12 diameter so considerably thinner and weaker than these quarter inch 'structural' screws.While these "structural" screws appear similar to mere "deck" screws they are clearly far superior. They are thicker, stronger, heat treated, and given a very durable multiple layer 'epoxy' coating to resist corrosion.They drive fairly easily into soft wood without pre-drilling, and handle heavy torque better than the old deck screws which tended to break when driving through denser, harder areas of a board. The included driver bit is pretty heavy duty so it should hold up well even to abuse.Fifty of these screws is priced thirty dollars, which comes to 60 cents each. While that seems high at first, given the heat-treated strength and the superior triple coating I think it's a fair price. While I've only used a few of them so far, as I use more of them and time goes on if I do experience any problems I can come back and edit this review. I don't expect there will be problems though.I'm very impressed with the quality of these screws, and my dated supply of old deck screws does not hold a candle to these even though at the time those deck screws were innovative and top shelf.If I were to build another deck now, I'd use these screws to attach rails to posts and the like. The main structural members I would still use the tried-and-true method of beefy bolt and nut, but for certain types of applications such as in landscaping this type of screw makes a great replacement for a traditional lag screw. I would trust these screws at 1/4" to be at least as strong as a 5/16" traditional lag screw, due to these screws being heat-treated and more dense.
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