Thread pitch gauge

<h2 id="usage">Usage</h2>

<p>To use a thread gauge, the user must first match the type of thread to the gauge. For example, attempting to measure metric threads with an imperial gauge will not return accurate results. To determine the correct gauge, a process of trial and error may be needed if the screw is of unknown origin. 
</p><p>Once the correct gauge is determined, the user should extend one of the leaves of the tool and press it against the threaded portion of a <a href="/facts/Screw/Rr0k38TC">screw</a>. If the teeth (cut into the leaf) match the spacing of the thread, then the user can read off the thread pitch stamped into the leaf. If the fit is not good, the user should try a different leaf.
</p><p>Note that this tool is <i>not</i> for accurate measurement of an unknown thread, such as a hand-turned thread from a lathe. This tool is meant for a best-approximation measurement to a known thread standard.
</p>
<h2 id="see-also">See also</h2>
<ul><li><a href="/facts/Thread_angle/Ye2eBXYg">Thread angle</a></li>
<li><a href="/facts/Thread_pitch/dqGzDfHv">Thread pitch</a></li>
<li><a href="/facts/Radius_gauge/wt33Fs49">Radius gauge</a></li></ul>

<h2 id="external-links">External links</h2>
<ul><li><a href="http://www.boltdepot.com/fastener-information/Printable-Tools/Default.aspx">Printable thread gauges</a></li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>Schnetler, Jenny; Majiet, Salie (2007), FCS Fitting and Turning: Level 2, Pearson South Africa, p. 34, ISBN 978-1-86891-764-8. <a href="978-1-86891-764-8" target="_blank">978-1-86891-764-8</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
<li id="fn:2"><p>Erjavec, Jack (2004). Automotive Technology. Thomson Delmar Learning. p. 85. ISBN 978-1-4018-4831-6. <a href="978-1-4018-4831-6" target="_blank">978-1-4018-4831-6</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li>
<li id="fn:3"><p>Webster, Jay (2001). Outdoor Power Equipment. Albany: Delmar Thomson Learning. p. 67. ISBN 978-0-7668-1391-5. <a href="978-0-7668-1391-5" target="_blank">978-0-7668-1391-5</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li>
</ol>

Thread pitch gauge open-in-new

Thread pitch gauge