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A490 Heavy Hex Structural Bolts
Typical Material： Alloy Steel
Material and Mechanical Properties： ASTM A490 Type 1
Dimensions： ASME B18.2.6
Typical Hardness： HRC 33-39 on sizes 1/2 to 1 inch less than 2D in length and HRC 39 max 2D and greater in length;HRC 33-39 on sizes 1-1/8 to 1-1/2 inches less than 3D in length,HRC 39 max 3D and longer lengths.
Tensile Strength： 150,000 PSI min to 173,000 PSI max
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