Overview
ASTM A325 structural hex bolts are high-strength fasteners designed specifically for structural steel connections. These bolts are commonly used in heavy construction, infrastructure, and steel erection projects where dependable load-bearing performance is required.
Offshore Milling & Sourcing supports bulk and factory-direct sourcing programs for ASTM A325 structural bolts, serving distributors, steel fabricators, contractors, and OEM procurement teams requiring consistent quality, documentation, and volume pricing.
We provide structured sourcing solutions for container programs, recurring projects, and secondary supplier strategies.
Specifications
- Standard: ASTM A325
- Type: Type 1 (Carbon Steel) / Type 3 (Weathering Steel)
- Material: Medium Carbon Steel (Type 1) / Weathering Steel (Type 3)
- Minimum Tensile Strength: 120,000 psi
- Minimum Yield Strength: 92,000 psi
- Hardness: Rockwell C24–35
- Thread Type: UNC (Coarse Thread Only)
- Diameter Range: 1/2″ – 1-1/2″
- Length Range: Standard structural lengths available
- Head Marking: Manufacturer identification + A325 marking
- Dimensional Standard: ASME B18.2.1
Materials
- Medium Carbon Steel (Type 1)
- Weathering Steel (Type 3)
Finish & Coating Options
- Plain Finish
- Hot-Dip Galvanized (HDG)
- Mechanical Galvanized
- Custom Coating Solutions Available Upon Request
(Coating selection is often driven by environmental exposure and project specification requirements.)
Industries Served
- Structural Steel Fabrication
- Commercial Construction
- Infrastructure & Bridge Construction
- Utility Structures
- Industrial Facilities
- Steel Erection Contractors
- Distribution & Fastener Supply Houses
Applications
- Structural steel beam-to-column connections
- Bridge assemblies
- Heavy commercial construction
- Utility and transmission structures
- Infrastructure support assemblies
- Industrial plant construction
Strategic Sourcing Capabilities
Structural bolt sourcing often requires strict compliance, documentation, and traceability. Offshore Milling & Sourcing supports factory-direct programs with quality verification and documentation alignment.
Our sourcing capabilities include:
- Direct manufacturer relationships
- Pre-shipment quality verification
- Container consolidation programs
- Secondary supplier and overflow sourcing support
- Volume-based pricing structures
- Documentation coordination for structural compliance
We frequently support distributors and contractors seeking margin improvement, lead-time stability, or backup supply for large structural projects.
Volume & Packaging Options
- Bulk cartons
- Palletized shipments
- Full container load programs
- Mixed SKU container consolidation
- Project-based volume scheduling
Request a Quote
If you are sourcing ASTM A325 structural hex bolts in bulk, please provide:
- Diameter
- Length
- Type (Type 1 or Type 3)
- Finish requirement
- Quantity
- Project timeline
- Documentation requirements
