$199 away from FREE SHIPPING

8 products

Plain A325 Structural Bolts for Indoor Steel Connections

Plain finish A325 structural bolts are a trusted choice for steel-to-steel connections in controlled environments where corrosion resistance isn’t a concern. Made from medium carbon steel and heat-treated for strength, these bolts meet ASTM A325 standards and deliver dependable performance in load-critical structural assemblies.

Built for Strength. Designed for Interior Applications.

These uncoated heavy hex bolts are ideal for indoor or enclosed builds, such as warehouses, fabrication facilities, and OEM manufacturing. They feature a wide bearing surface and coarse threads for secure clamping under heavy loads. Commonly paired with matching nuts and washers, plain A325 bolts offer a cost-effective solution where durability and compliance matter most.

Applications

  • Steel frame construction (interior)
  • Pre-engineered metal buildings
  • Bridge connections under cover or treatment
  • OEM machinery, equipment frames, and industrial structures

Why Choose Our A325 Plain Bolts?

  • ASTM A325 Certified: Meets industry standards for structural bolted joints.
  • Heavy Hex Head: Provides strong torque engagement and reliable clamping force.
  • Plain Finish: Ideal for dry, interior applications without exposure to the elements.
  • Consistent Shear & Tensile Strength: Engineered to perform under stress in load-bearing joints.
  • Broad Inventory: Available in a full range of sizes to meet your engineering specs.

Recommended Pairings

  • Structural Washers: Ensure even load distribution and prevent wear on structural components.
  • Heavy Hex Nuts: Match bolt threads for secure fastening in structural joints.

From industrial machinery builds to large-scale steel construction, US Cargo Control offers plain A325 bolts that meet strength standards and ship fast. Have specific sizing needs or compliance documentation requirements? We’re ready to help you source exactly what your project demands.

top