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Hex Machine Bolts,Grade 8

Typical Material:   Medium Carbon Alloy Steel
Material and Mechanical Properties:  1/4 to 1-1/2 are purchased to meet SAE J429 Grade 8.Diameters over 1-1/2 are purchased to meet ASTM A354 Grade BD.
Dimensions:   ASME B18.2.1
Typical Hardness:   HRC 33-39 on sizes 1/4 to 2-1/2 inches;HRC 31-39 on sizes over 2-1/2 inches.
Tensile Strength:   150,000 PSI Minimum on sizes 1/4 to 2-1/2 inches;140,000 PSI Minimum on sizes over 2-1/2 inches.


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