ASTM A325 U-Bolts and J-Bolts

ASTM A325 U-Bolts and J-Bolts are custom-bent fasteners manufactured using material that conforms to the high tensile and yield strength requirements of the ASTM A325 structural specification. U-Bolts are used primarily for clamping pipework and tubing to structural supports. J-Bolts are used as heavy-duty anchor bolts in concrete foundations. By utilizing A325 material, these components ensure the structural connections possess the highest available strength for carbon steel, having been quenched and tempered to resist heavy static and dynamic loads. Zeron Fastners supplies A325-grade U-Bolts and J-Bolts for applications in bridges, heavy machinery bases, and large industrial piping supports.

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ASTM A325 U-Bolts and J-Bolts

ASTM A325 Type 1 Bolting Chemical Composition

Element Content (%)
Carbon (C) 0.30 – 0.52
Manganese (Mn) 0.60 min
Phosphorus (P) 0.035 max
Sulfur (S) 0.045 max
Silicon (Si) 0.10 min
Boron (B) Optional

ASTM A325 U-Bolts and J-Bolts Mechanical Properties

Property 1/2" to 1" Diameter (min) 1-1/8" to 1-1/2" Diameter (min)
Tensile Strength 120 ksi (827 MPa) 105 ksi (724 MPa)
Yield Strength (0.2% Offset) 92 ksi (634 MPa) 81 ksi (558 MPa)
Elongation in 4D 14% 14%
Hardness (Brinell max) 319 HB 319 HB

ASTM A325 U-Bolts and J-Bolts Feature Products