Business Details
Your Trusted Source for Structural Bolts in Philadelphia
Haydon Bolts, a family-owned manufacturer since 1864, specializes in producing high-quality structural bolts and anchor rods melted and manufactured entirely in the United States. With over 160 years of experience, we combine time-tested craftsmanship with modern production techniques to deliver reliable fastening solutions for heavy construction projects. Our 50,000-square-foot facility in Philadelphia, PA, maintains the largest inventory of domestically produced structural bolts in the country, ensuring rapid fulfillment of orders. We prioritize operational efficiency to offer next-day delivery across the Northeast and Mid-Atlantic regions while maintaining nationwide shipping capabilities. Our commitment to quality is evidenced by our adherence to ASTM standards and provision of full documentation for every product.As an AISC Associate member company, we serve as a trusted single-source supplier for structural bolts, washers, nuts, weld studs, and specialized fastening tools. Our teams deep industry expertise enables us to provide technical support and customized solutions for complex construction challenges. By maintaining strict quality control and inventory readiness, we help clients meet project deadlines without compromising compliance or safety. Our long-standing reputation for reliability and transparency has made us a preferred partner for contractors and engineers nationwide. Through continuous investment in manufacturing capabilities and customer service, we remain dedicated to advancing the standards of American-made construction fasteners.
Services
Structural Bolts
Anchor Rods
Weld Studs
Tie-Rod Assemblies
Galvanized Fasteners
U-Bolts
Eye Bolts
Washers
Nuts
Threaded Rod
Highlights and features
- Family-owned since 1864 with unmatched industry experience
- Largest inventory of U.S.-made structural bolts nationwide
- Next-day delivery from Maine to North Carolina
- Full documentation for compliance and traceability
- Single-source supplier for all construction fastening needs
Associations and certifications
- AISC
- ASTM
- RCSC
- AGC
- IFI
- NFDA
- SEAA
Services
Structural Bolts
Haydon Bolts manufactures ASTM-compliant structural bolts in diameters from " to 4" and lengths up to 40 feet. Available in plain, galvanized, or weathering finishes, these bolts meet A325, A490, A449, and A354-BD specifications. Our production capabilities ensure precise tolerances and material traceability for critical infrastructure projects requiring reliable load-bearing connections.
Anchor Rods
We produce custom anchor bolts and rods for securing structural elements to concrete foundations. Our products include bent anchor bolts, sleeve bolts, and headed studs meeting ASTM F1554 Grade 36/55/105 specifications. With diameters up to 4" and lengths exceeding 20 feet, these anchors provide seismic-resistant connections for commercial and industrial buildings.
Weld Studs
Haydon Bolts supplies headed concrete weld studs and shear connector studs for composite construction applications. Our weldable studs comply with AWS D1.1 structural welding code and feature deformed bars for enhanced concrete adhesion. Available in carbon steel and stainless steel options, these studs enable efficient deck-to-beam connections in multi-story buildings.
Tie-Rod Systems
Our engineered tie-rod assemblies provide structural reinforcement for bridges, towers, and industrial equipment foundations. Systems include swedge bolts, turnbuckles, and clevis pins that meet A36/A449 material standards. Custom configurations with galvanized coatings ensure corrosion resistance in outdoor and marine environments while maintaining 20+ years of service life.
Fastener Kits
We offer pre-assembled fastener kits containing matched bolts, nuts, washers, and tension indicators for specific structural applications. Kits comply with RCSC Specification for Structural Joints and include traceable documentation for quality assurance. This one-stop solution reduces procurement complexity and ensures component compatibility for critical connections in bridges and high-rise buildings.
Questions
What materials do you use for your structural bolts?
Haydon Bolts uses domestically sourced carbon steel melted and manufactured in the U.S. to meet ASTM A325, A490, and A449 specifications for structural applications.
Do you provide documentation for your fasteners?
Yes, we provide full traceability documentation including mill test reports and certification for all structural bolts and anchor rods to ensure compliance with project requirements.
What regions do you deliver to?
We offer next-day delivery from Maine to North Carolina and maintain nationwide shipping capabilities across the United States and Canada.
Can you produce custom-length bolts?
Yes, we manufacture bolts up to 40 feet in length and can create custom lengths within this range to meet specific project requirements.
What quality standards do you follow?
Our production adheres to ASTM, AISC, and RCSC standards with regular testing for tensile strength, hardness, and dimensional accuracy to ensure structural integrity.
Do you sell directly to contractors?
Yes, we work directly with contractors, engineers, and fabricators while also maintaining distributor partnerships to ensure convenient access to our products nationwide.
