ASTM A320 Grades
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Bolt Grades and Tensile ClassRaw Material Specification
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L7
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L7A
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L7B
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L7C
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L70
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L71
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L72
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L73
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L43
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L7M
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B8 Class 1
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B8C Class 1
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B8M Class 1
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B8P Class 1
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B8F Class 1
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B8T Class 1
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B8LN Class 1
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B8MLN Class 1
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B8A Class 1A
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B8CA Class 1A
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B8MA Class 1A
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B8PA Class 1A
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B8FA Class 1A
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B8TA Class 1A
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B8LNA Class 1A
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B8 Class 2
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B8C Class 2
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B8P Class 2
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B8F Class 2
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B8T Class 2
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B8M Class 2