Standard Speciﬁcation for Steel Tires1
This widespread is issued below the ﬁxed designation a 551; the quantity right now following the designation shows the yr of original adoption or, in the case of revision, the yr of ultimate revision. More than a few in parentheses suggests the 12 months of ultimate reapproval. A superscript epsilon (e) suggests an editorial exchange for the reason that remaining revision or reapproval.
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