ASTM F3125 Structural Bolts

ASTM A325 and A490 Standards were officially withdrawn by ASTM in 2016 and Consolidated them under new ASTM F3125 Standard. A325 and A490 heavy hex structural bolts are now grades under the new F3125 specification.

Due to Wide reorganization of A325 and A490 specifications worldwide we still kept the summaries of A 325 & A490 Standards on our Website as per their latest Chemical, mechanical and physical Properties of ASTM F3125 Structural Bolt manufactured from steel and alloy steel.

ASTM F3125 replaces six older ASTM standards

applies to bolts from ½” up to 1½” diameter

:

• A325: Applies to Heavy Hex Structural Bolt with Minimum Strength of 120 ksi.
• A325M: Applies to Heavy Hex Structural bolts with Minimum Strength of 830 Mpa.
• A490: Applies to Heavy Hex Structural Bolt with Minimum Strength of 150-173 ksi.
• A490M: Applies to Heavy Hex Structural bolt with Minimum Strength of 1040 Mpa.
• F1852: Applies to Twist Off” Type Tension Control Structural Bolt/Nut/Washer Assemblies used in steel frame construction with Minimum Strength of 120 ksi.
• F2280: Heat treated Tension Control Structural Bolt/Nut/Washer Assemblies in Steel with Minimum Strength of 1 50ksi.

The key change is that A325 bolts sized 1-1/8″ to 1-1/2″ now have the same strength requirements as bolts 1″ and smaller. Earlier, the larger bolts had slightly lower tensile strength limits.