Structural Bolts
Tap into the nation’s largest inventory of structural bolts and fasteners.
Strengthen Steel-to-Steel Connections
Reliable, high-quality structural bolts are critical to bridge, building and highway construction.
The most common grades of structural bolts are A325 and A490. Both are part of the ASTM F3125 standard and have heavy hex heads. While A490 bolts are generally stronger, A325 bolts are more corrosion-resistant. Application requirements and factors such as structural load and environmental conditions determine which grade to use.
Manufactured to precise dimensions with resilient materials, our high-performance structural bolts and fasteners are built for your needs. Add protection from harsh elements with durable finishing options, including type 1, type 3, hot dip galvanized and mechanical galvanized.
Reinforced With Quality
Made-to-Order Fasteners
Harness in-house engineering expertise for built-to-spec components, including custom sizes.
Quick Turnaround
Enjoy fast shipping times with a strategic network of distribution centers across the U.S. and Mexico.
Bolts Built To Last
Preserve project integrity with a vast inventory of precision-engineered structural bolts and fasteners.
Heavy Hex Bolts
Tension Control Bolts
F436 Washers
DH Nuts
DTI Squirters
Could You Get Your Fasteners Faster?
Learn four ways to shorten lead times for structural steel bolts.
Certified for Performance
Secure Any Structure
Count on Birmingham Fastener to deliver unmatched performance with structural bolts precision-engineered to withstand the harshest conditions.
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Custom Manufacturing
Turn to the experts when you need non-standard bolts tailored to your specific requirements.
Vendor-Managed Inventory (VMI)
Focus on your business and leave the fasteners to us with simplified logistics and ongoing support.
Lab/Testing Services
Get customization capabilities to design and manufacture parts, with specialized product development and design improvements.
Packing and Assembly
Use custom fastener kitting and customizable packaging design to streamline production.
Tighten Your Grip on Fastener Resources
Benefits of Structural Bolt Coatings
Nut Compatibility Chart for ASTM A325 and A490
Structural Bolt Stickout: Minimums and Maximums
Streamline Your Logistics
Don’t let projects fall apart before they start – gain the advantage of working with a fully integrated fastener partner.