ASTM A325 / F3125 — High-Strength Structural Bolts

ASTM A325 (now consolidated into F3125) specifies high-strength structural bolts for steel-to-steel connections, tightened to a specified pretension.

What It Covers

• A325 and A490 strength grades
• Type 1 and Type 3 (weathering)
• Pretension and installation
• Marking requirements

Related Fasteners

• Structural Bolt
• Structural Washer
• Hex Bolt
• Hex Nut