ASTM A 325/A325M

Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength-AASHTO No.: M 164 / Standard Specification for Structural Bolts, Steel, Heat Treated 830 MPa Minimum Tensile Strength [Metric]

This specification covers two types of quenched and tempered steel heavy hex structural bolts having a minimum tensile strength of 120 ksi for sizes 1.0 in. and less and 105 ksi for sizes 1.0 to 1 1/2 in., inclusive./This specification covers two types of quenched and tempered steel metric heavy hex structural bolts having a minimum tensile strength of 83 MPa.

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