Zeron Fastners
ASTM A325 Stud Bolts
ASTM A325 Stud Bolts are non-headed, externally threaded fasteners manufactured to the high-strength material requirements of the A325 structural specification. Though A325 primarily governs hex bolts, the material grade is often applied to threaded rod forms for structural anchoring or specialized bolted joints where the specified tensile and yield strengths of A325 are necessary. These bolts are made from medium carbon steel that is quenched and tempered, providing high resistance to static and dynamic loads. A325 structural studs are critical for fastening heavy steel structures, anchor plates, and industrial machinery where robust, high-strength tensioning is required. Zeron Fastners ensures compliance with A325 material and mechanical specifications for all structural stud products.
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ASTM A325 Type 1 Bolting Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.30 – 0.52 |
| Manganese (Mn) | 0.60 min |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.045 max |
| Silicon (Si) | 0.10 min |
| Boron (B) | Optional |
ASTM A325 Stud Bolts Mechanical Properties
| Property | 1/2" to 1" Diameter (min) | 1-1/8" to 1-1/2" Diameter (min) |
|---|---|---|
| Tensile Strength | 120 ksi (827 MPa) | 105 ksi (724 MPa) |
| Yield Strength (0.2% Offset) | 92 ksi (634 MPa) | 81 ksi (558 MPa) |
| Elongation in 4D | 14% | 14% |
| Hardness (Brinell max) | 319 HB | 319 HB |