Guardrail Bolts (DUPLICATE)

Applications

Guardrail bolts are essential components in a wide range of safety and infrastructure applications. Most commonly, they are used to securely fasten guardrail systems along highways, roads, and bridges, helping to protect motorists by absorbing and redirecting impact forces during collisions. Beyond transportation infrastructure, these bolts are also widely employed in industrial settings such as warehouses, loading docks, and manufacturing facilities, where they anchor protective barriers that safeguard equipment and personnel. Additionally, guardrail bolts are frequently used in parking structures, pedestrian walkways, and construction zones, offering a reliable solution for both temporary and permanent safety installations.

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Specs

The AASHTO M 180 specification covers steel components used in highway guardrail applications, including bolts, nuts, washers, guardrail beams, end sections, terminal connectors, backup plates, guardrail posts, and anchorage wire rope and swage fittings. Guardrail splice bolts and post bolts are typically manufactured to meet the chemical and mechanical requirements of ASTM A307 Grade A and are hot-dip galvanized for enhanced corrosion resistance.

• Post Bolts: Used to fasten the W-Beam guardrail panels to vertical posts. Longer than splice bolts, they typically start at 2″ with specialty applications requiring extended lengths up to 46″.
  
• Splice Bolts: Used to connect overlapping sections of guardrail panels end-to-end. The oval neck design locks into the rail slot to prevent rotation. Standard size: 5/8” × 1-1/4”. Proper installation is critical for guardrail performance in collisions.

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Stock List

Portland Bolt Northeast stocks thousands of post bolts and splice bolts, which are available for immediate shipment.

Custom Guardrail Bolt Sizes

While we keep the most popular items readily available for immediate purchase, we also supply special order non-stock sizes.

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FAQs