Standard Specification for Phosphor Bronze Rod, Bar, and Shapes1
This widespread is issued beneath the fixed designation b 139/b 139m; the number right away following the designation shows the 12 months of unique adoption or, in the case of revision, the yr of last revision. a number in parentheses suggests the 12 months of remaining reapproval. a superscript epsilon (e) shows an article exchange because the ultimate revision or reapproval.
This widespread has been authorised for use by organizations of the department of defense.
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