Lag Bolts
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- Corrosion Resistant For Outdoor Use
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starting at$0.43Ships Jul 14 when you order nowstarting at$0.43Ships Jul 14 when you order now
Heavy-Duty Lag Bolts for Wood, Concrete & More
US Cargo Control’s selection of lag bolts is built for strength, reliability, and results. Whether you're framing a deck, installing fencing, anchoring into concrete, or taking on structural wood construction, our lag bolts give you the power to fasten with confidence. With corrosion-resistant finishes, heavy-duty threading, and jobsite-proven performance, these are the bolts professionals and DIYers reach for again and again.
What Makes Lag Bolts a Go-To Fastener?
Lag bolts, also called lag screws, are engineered for high-strength connections where traditional screws just won’t cut it. Their thick shafts, deep threads, and pointed tips allow them to bite deep into wood or anchor securely into masonry when paired with shield anchors. These fasteners are a must-have for:
- Deck framing and ledger board installations
- Timber-to-timber or timber-to-concrete connections
- Heavy machinery anchoring
- Outdoor construction exposed to weather or moisture
Choose the Right Lag Bolt for Your Build
We carry lag bolts in multiple diameters, lengths, head styles, and finishes to suit every environment and load demand.
Lag Bolt Head Styles
- Hex Head: The industry standard. Easy to install with a wrench or socket, perfect for structural work.
- Square Head: Used for restoration, vintage builds, or aesthetic appeal with old-school charm.
- Flange Head: Built-in washer face offers broader load distribution, no separate washer needed.
Top-Performing Materials & Finishes
- Hot-Dip Galvanized: Best for general outdoor use. Resists rust and weathering over time.
- 304 Stainless Steel: Excellent in agricultural or wet environments. Resists corrosion and staining.
- 316 Stainless Steel: Premium protection in coastal or marine conditions. Maximum resistance to salt, moisture, and chemical exposure.
Sizing That Fits the Job
- Diameters: Available in sizes from 1/4" to 3/4". Larger diameters offer higher load-bearing strength.
- Lengths: Options from 1" to 20" to match your application depth and fastening requirements.
Need Lag Bolts for Concrete?
Lag bolts aren’t just for wood. When paired with a lag shield anchor, they become a powerful solution for anchoring into concrete, brick, and block, perfect for securing posts, brackets, or supports in masonry.
FAQs About Lag Bolts
- Are lag bolts and lag screws the same?
- Yes, the terms are used interchangeably. Both describe a large wood screw with a hex or square head used for heavy fastening.
- Do I need to pre-drill holes for lag bolts?
- Yes. Always pre-drill a pilot hole to avoid wood splitting and ensure easy threading.
- Can I use lag bolts in treated wood?
- Yes, especially stainless steel or hot-dip galvanized options, which resist corrosion caused by chemical treatments.
- Will stainless steel lag bolts rust?
- 304 and 316 stainless steel lag bolts are highly resistant to rust and ideal for harsh, wet, or marine conditions.
Complete Your Lag Bolt Setup
Enhance holding strength and material protection with compatible accessories:
- Washers: Prevent pull-through, distribute load, and protect wood surfaces.
- Lag Shield Anchors: Expandable anchors for secure lag bolt installation in concrete and masonry.
- Nuts: Used in special applications where double-ended threading or back-fastening is required.
Shop Lag Bolts Online with Confidence
At US Cargo Control, we supply top-grade lag bolts backed by fast shipping and proven performance. Every size, finish, and configuration is built to meet the demands of real-world construction. Get the fasteners you need to do the job right, browse now and order with confidence.