Hex Bolt A325
The A325 hex head bolt is a high-strength steel fastener per ASTM standards, designed for structural steel and heavy industrial connections. Diameter ranges from 16 to 36 mm, with lengths from 50 to 300 mm. Made from carbon or alloy steel with heat treatment, tensile strength ranges from 830–940 MPa and yield strength from 660–830 MPa. Threads are manufactured to UNC or UNF standards, providing high shear and tensile load capacity.
The hex head, with a standard height of 10–24 mm, allows installation with wrenches or industrial power tools. Hot-dip galvanization or epoxy coating enhances corrosion resistance under harsh conditions. Common applications include bridges, steel frameworks, heavy equipment, and industrial machinery. A325 mechanical design ensures uniform load distribution, increased safety, and reduced maintenance requirements.
