A307 Material New! 〈2024-2026〉

This standard does not purport to address all safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

Here are a few options for a post about , depending on your target audience (engineering professionals, students, or general industry).

If hot-dip galvanized, bolts shall conform to ASTM A153/A153M. Other coatings (e.g., zinc plating, mechanical plating) require agreement. a307 material

What is the most common misuse of A307 you’ve seen in the field? Let’s discuss in the comments. 👇

Best for: Student groups, forums, or quick reference guides. This standard does not purport to address all

The ASTM A307 specification is divided into three distinct grades, each tailored for specific mechanical properties and applications:

Fasteners shall be free of burrs, cracks, seams, or other defects. Heads shall be concentric with the body. If hot-dip galvanized, bolts shall conform to ASTM

A307 covers carbon steel bolts, studs, and threaded rod intended for general applications. Unlike high-strength bolts, A307 is designed for lower tensile strength requirements, maxing out at 60,000 PSI.

While high-strength bolts (like A325) are for heavy structural loads, A307 is your go-to for general applications.

Don't confuse "General Purpose" with "Structural." A307 is not approved for slip-critical connections or high-strength structural steel framing where A325/A490 are required. Always check the structural drawings before substituting!

(when specified as medium carbon): Carbon 0.30–0.49%, Manganese 0.60–1.00%, P max 0.04%, S max 0.05%.