Standard Speciﬁcation for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength1

This fashionable is issued underneath the ﬁxed designation a 490; the variety at once following the designation indicates the year of authentic adoption or, within the case of revision, the 12 months of ultimate revision. Quite a number in parentheses shows the yr of final reapproval.

A superscript epsilon (e) indicates a piece of writing exchange because of the remaining revision or reapproval.
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