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  • Users: Jmund
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  1. Jmund

    ASTM 193 B7

    Why is it so common to see ASTM 193 Grade B7 bolt with ASTM 194 Grade 2H nut? Why not use a ASTM 194 Grade 7 heavy hex nut with the same chromoly composition? The same spec. commonly calls for zinc plating both items. Why zinc plate a "stainless" bolt? Especially for pipe flanges that may...

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