Structural Hex Bolts
At American Bolt Corp, structural hex bolts are not just another product — they are one of our core product categories and among our top-selling items. For decades, contractors, engineers, and fabricators have trusted us to supply premium heavy hex structural bolts for critical, load-bearing applications.
We offer a complete selection of ASTM F3125 Grade A325 and Grade A490 structural heavy hex bolts, available in a wide range of diameters, lengths, and coatings to meet your project’s needs. Our bolts are stocked for fast shipment and supported by full lot traceability.
What Are Structural Hex Bolts?
The structural hex bolt is designed with a larger heavy hex head for distributing load evenly across structural steel connections. American Bolt Corp supplies structural heavy hex bolts in ASTM F3125 Grade A325 and Grade A490 specifications.
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F3125 Grade A325 bolts are typically supplied in plain finish or hot-dip galvanized, depending on project requirements.
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F3125 Grade A490 bolts are supplied in plain finish for high-strength structural applications.
These bolts are commonly specified for steel erection, fabrication, bridge work, industrial structures, and any connection where structural performance and code compliance are required.
Complete Your Structural Bolt Assembly
Structural connections typically require compatible fasteners. Structural nuts and structural flat washers are available on separate pages and can be paired to meet your project spec:
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Structural Nuts: ASTM A563 Grade C or A563 DH
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Structural Flat Washers: ASTM F436
Request a Quote on Our Best-Selling Bolts
Looking for the right structural hex bolt solution? Reach out today for expert advice or to request a quote on our top-selling ASTM F3125 A325 and A490 heavy hex structural bolts.