Structural Bolts
ASTM F3125 covers high strength structural bolts including Grades A325 and A490. These bolts are designed for steel-to-steel structural connections and include heavy hex bolts and tension control bolts. Birmingham Fastener houses the nation’s largest inventory of structural bolting components, both domestic and imported. Custom sizing is available. Our product line includes:
• F3125 Structural Bolts (A325, A490)
• F3125 Tension Control Bolts (F1852, F2280)
• DH Nuts
• F436 Washers
• DTI Squirters and Dura-Squirters
Grades: A325, A490
Finishes: Type 1, Type 3, Hot Dip Galvanized, Mechanical Galvanized
Available Dimensions: Heavy Hex Bolts
Tension Control Bolts
For more information and resources on structural bolts, check out the Structural Bolt Learning Hub.
ASTM F3125: What Kind of Structural Bolts Does it Cover?
Can I Put a Hot-Dip Galvanized Nut on a Mechanical Galvanized Bolt?
Tension-Control Bolt Installation Problems
Standard vs. Non-Standard Structural Bolts
DTI Washers and TC Bolts: Helping Ensure Torque and Tension
Structural Nut Color: Why Color Doesn’t Equal Coating
Structural Bolt Coatings
Who Creates Structural Bolt Specifications and Standards?
What is the Difference in Type 1 vs. Type 3 Structural Steel?
Structural Bolt Head Markings
