Astm A307 Material Verified 90%

ASTM A307 remains the workhorse of low-strength, general-purpose fasteners. When specifying A307, always include the grade (A or B) and the finish (plain, zinc-plated, or galvanized). For any application requiring controlled yield strength or weldability, consider upgrading to ASTM F1554 Grade 36. This text is for informational purposes. Always verify with the full current ASTM standard for legal and engineering compliance.

1. General Overview ASTM A307 is the standard specification for low-carbon steel bolts, studs, and threaded rods intended for general engineering applications. It is the most common commercial grade of fastener used in non-critical, low-strength bolting. Unlike higher-strength bolts (such as ASTM A325 or A490), A307 bolts are not intended for structural connections subject to high stress or vibration, but rather for flange connections, anchor bolts, utility poles, and light machinery. astm a307 material

| Standard | Tensile Strength | Typical Use | | :--- | :--- | :--- | | | 60 ksi | General commercial, flanges | | ASTM A449 | 120-150 ksi | Higher strength, quenched & tempered | | ASTM F1554 | 36-105 ksi | Anchor bolts (replaces A307 Grade C) | | SAE J429 Grade 5 | 120 ksi | Automotive, structural | This text is for informational purposes