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A325 Structural Bolts

Intended for structural bolting uses, ASTM A325 hex bolt dimensions range from ½ to 1½ inches in diameter. ASTM A325 is an international standard for heavy hex structural bolts set by ASTM International (American Society for Testing and Materials). As a hex bolt standard, it was replaced by ASTM F3125 in 2016, but there is still quite a demand for A325 hex bolts. Additionally, the same bolt head markings are used to avoid any confusion.

Fastco Inc. is your reliable supplier of high-strength A325 hex & heavy hex bolts. Our large inventory, quick delivery times, and extensive experience set us apart from the competition. Begin your online order today or speak to one of our team members about any bolt questions you have at 253-383-1767.


What Specifications Make a Bolt Meet A325 Standards?

A325 heavy hex bolts are available in various configurations and ready to ship. Choose from the following ASTM standard dimensions and specifications:
  • Available in plain steel or hot dipped galvanized steel
  • Length range: 1¼”-10”
  • Diameter range: ½”-1½”
  • Minimum tensile strength: 105-120 tensile ksi

A325 Structural Bolts Industrial Applications

ASTM A325 bolts are particularly used in construction and structural bolting projects, original equipment manufacturers (OEMs), and structural steel services. A325 hex bolts with a galvanized finish are commonly used in bridge and highway construction because of their corrosion resistance.
A325 bolts from Fastco Inc. are ideal for your unique application. Check out the different industries we serve every day with our A325 bolts:

Control & Traceability of A325 Bolts

Control and traceability of A325 bolts, or any fasteners for that matter, are crucial aspects in construction and engineering industries. Safety and structural integrity are what seperates A325 bolts apart for the right applications. A325 bolts are commonly used in critical structural applications such as bridges, buildings, and other infrastructure. Ensuring their quality is essential for the safety and structural integrity of these projects. Lot control and traceability help maintain the highest standards of safety. Lot control ensures that bolts used in a project come from the same production batch. This helps maintain consistent quality and ensures that all bolts in a particular lot meet the same specifications and standards.

Many industry standards and codes require the use of traceable and controlled fasteners like A325 bolts. Maintaining documentation on lot numbers and traceability information is often necessary for compliance with these standards. Lot control allows for more effective quality control and testing procedures during the manufacturing process. Manufacturers can sample and test bolts from specific lots to ensure they meet the required specifications. In the rare event that a defect or problem is identified in a specific lot of bolts, being able to trace those bolts back to their source facilitates efficient recalls and replacements. This minimizes downtime and project delays.

A325 Bolt Material Certification

Traceability often involves maintaining documentation of the source of raw materials used in the production of bolts. This is important for verifying that the materials meet the required standards and are free from defects. Material Test Reports (MTRs), also known as Material Certificates or Mill Test Reports, are essential documents in various industries, including manufacturing, construction, and engineering. These reports provide detailed information about the properties and quality of materials used in a specific product, component, or construction project. Key components of MTRs can include:
  • Quality Assurance
  • Traceability
  • Compliance with Specifications
  • Material Properties
  • Material Heat Treatment
  • Batch and Lot Control
  • Third-Party Verification
  • Regulatory Compliance
  • Warranty and Liability
  • Material Selection and Procurement

Why Choose Fastco as Your Source for A325 Bolts?

Located in the Pacific Northwest, we have been in business since 1963. We’re known by our customers for our wide inventory, experienced staff, and excellent customer service. Our team has over 30 years of experience within the fastener distributor industry, and we make sure to provide each client with results and quality service.

Our focus on fasteners has helped us to develop relationships with companies across many different industries. Fastco Inc. has one of the largest fastener inventories in the northwest. We know what our customers need to be successful, and we’re here to help you. At Fastco Inc., we provide speedy delivery and quick turnaround to keep your job on track.

Read more about us today, meet our team, or contact us to learn more about the different industries we serve.

Get the High Strength A325 Bolts You Need Today

Talk to our knowledgeable Fastco Inc. sales staff about the A325 structural bolts you need by calling 253-383-1767. Check out other bolts and fasteners we have in stock. Ready to work with us? Request a quote to get started today.

Need This Customized?

Fastco Inc. offers custom threading, cutting and bending services to meet your project needs.

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