Is A354BD an Acceptable Substitution for A490?

F3125 A490 is a specification for heavy hex bolts intended for structural connections. The specification only covers heavy hex bolts up to 1-1/2” diameter. In situations where bolts other than that configuration, or bolts larger than 1-1/2” diameter are required, A354 Grade BD may be specified. While the two specifications do not have identical mechanical properties, they are extremely similar.

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