<html><head></head><body><p dir="ltr">Helicoils are an option.</p>
<p dir="ltr">Sean<br>
</p>
<br><br><div class="gmail_quote">On March 22, 2015 11:58:31 AM MDT, Rick Patton via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div dir="ltr"><div>Hank</div><div><br /></div>Fine is the only way to go as aluminum is a much softer metal than steel so it will strip much easier so the more metal you grab, the better, which fine threads will give you.<div><br /></div><div>Rick</div></div><div class="gmail_extra"><br /><div class="gmail_quote">On Sun, Mar 22, 2015 at 5:55 AM, hank pronk via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br /><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Help I need advice!<br />
My new bow dome will be secured to the Al mating ring with straps. I am laying out the bolt holes to be threaded in the AL ring. My question is, should the bolts be fine or coarse thread? What holds better in AL ? The threads will be 3/8 by 1 in deep.<br />
Thank you in advance.<br />
Hank<br />
_______________________________________________<br />
Personal_Submersibles mailing list<br />
<a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br />
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br />
</blockquote></div><br /></div>
<p style="margin-top: 2.5em; margin-bottom: 1em; border-bottom: 1px solid #000"></p><pre class="k9mail"><hr /><br />Personal_Submersibles mailing list<br />Personal_Submersibles@psubs.org<br /><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br /></pre></blockquote></div></body></html>