is case may be marked <i>7/16BS</i> to indicate that they have a jaw size of 0.710&#160;in and are designed to take either the (later) <i>7/16 BSW</i> or <i>7/16 BSF</i> hexagon.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span>[</span>3<span>]</span></a></sup></p>
<p>The <a href="//en.wikipedia.org/wiki/British_Association_screw_threads" title="British Association screw threads">British Association screw thread</a> (BA) standard is sometimes classed with the Whitworth standard fasteners b