Product Description
<h2>7/8" UNC Grade 5 Self Colour Hex Head Fully Threaded Set Screws</h2>
<p>These 7/8" UNC Grade 5 steel hex head set screws feature a fully threaded shank for use with matching nuts or tapped holes. The external hexagon head allows tightening with a 1 5/16" spanner or socket.</p>
<p>Supplied in a self colour finish without added protective plating, these screws are suitable for applications requiring an unplated steel fastener. Additional corrosion protection may be required where moisture is present.</p>
<h3>Technical Specifications</h3>
<table>
<tbody>
<tr>
<th scope="row">Thread Size</th>
<td>7/8" UNC</td>
</tr>
<tr>
<th scope="row">Nominal Thread Diameter</th>
<td>7/8" — approximately 22.23 mm</td>
</tr>
<tr>
<th scope="row">Threads Per Inch</th>
<td>9 TPI</td>
</tr>
<tr>
<th scope="row">Thread Pitch</th>
<td>Approximately 2.822 mm</td>
</tr>
<tr>
<th scope="row">Thread Coverage</th>
<td>Fully threaded</td>
</tr>
<tr>
<th scope="row">Head Style</th>
<td>Hexagon head</td>
</tr>
<tr>
<th scope="row">Spanner Size Across Flats</th>
<td>1 5/16" — approximately 33.34 mm</td>
</tr>
<tr>
<th scope="row">Head Height</th>
<td>35/64" — approximately 13.89 mm</td>
</tr>
<tr>
<th scope="row">Material</th>
<td>Steel</td>
</tr>
<tr>
<th scope="row">Strength Grade</th>
<td>Grade 5</td>
</tr>
<tr>
<th scope="row">Finish</th>
<td>Self colour</td>
</tr>
</tbody>
</table>
<h3>Available Lengths</h3>
<p>Length is measured from underneath the head to the tip of the screw. Metric equivalents are provided for reference.</p>
<table>
<thead>
<tr>
<th scope="col">Imperial Length</th>
<th scope="col">Metric Equivalent</th>
</tr>
</thead>
<tbody>
<tr><td>2"</td><td>50.80 mm</td></tr>
<tr><td>2 1/4"</td><td>57.15 mm</td></tr>
<tr><td>2 1/2"</td><td>63.50 mm</td></tr>
<tr><td>3"</td><td>76.20 mm</td></tr>
<tr><td>4"</td><td>101.60 mm</td></tr>
</tbody>
</table>
<h3>Selecting Your Set Screw</h3>
<p>Select the required length and pack size from the available options. Use with matching 7/8"-9 UNC nuts or tapped holes, and allow for the thickness of any washers when choosing the length.</p>
<p>UNC, UNF and BSW are different thread forms. Check the thread specification of the mating component before ordering.</p>
<p><strong>Please note:</strong> Dimensions are provided as a guide. If precise dimensions are essential for your application, please contact us before ordering.</p>
<h3>Browse Related Categories</h3>
<ul>
<li><a href="/hex-head-bolts/">Hex Head Bolts and Set Screws</a></li>
<li><a href="/nuts/">Nuts</a></li>
<li><a href="/washers/">Washers</a></li>
<li><a href="/thread-data-guide-metric-unc-unf-bsp-sizes-uk/">Thread Size Guide</a></li>
</ul>
