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<a class="moz-txt-link-freetext" href="https://www.boltdepot.com/Search.aspx?q=1%2f4+x+28+screw">https://www.boltdepot.com/Search.aspx?q=1%2f4+x+28+screw</a><br>
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<div class="moz-cite-prefix">On 1/15/2023 8:06 AM, Eric Russell
wrote:<br>
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<blockquote type="cite"
cite="mid:CAP7dBXCpiSLzpezd37CFcVqGvLPknX1uERE2Cs1++rv=Lr54eg@mail.gmail.com">
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<div class="gmail_default" style="font-size:large">I think
tapping over the existing 1/4-28 will result in weak threads.
How about a Heli-Coil in 1/4-20?</div>
<div class="gmail_default" style="font-size:large"><br>
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<div class="gmail_default" style="font-size:large">EjR </div>
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<div dir="ltr" class="gmail_attr">On Sun, Jan 15, 2023 at 10:46
AM john <<a href="mailto:jniolon@att.net"
moz-do-not-send="true" class="moz-txt-link-freetext">jniolon@att.net</a>>
wrote:<br>
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<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div><font face="Segoe UI">I have a mirror mount on my truck
door that held a rear view mirror. Unfortunately the
mirror decided it didn't want to stay with my truck.</font></div>
<div><font face="Segoe UI">So, I'm looking for a
replacement. The mount is drilled and tapped for 1/4"-28
threads and most of what I find is 1/4-20. I'm
wondering if I can</font></div>
<div><font face="Segoe UI">re-tap the metal over existing
threads with a 1/4-20 thread and it will hold...or will
I just make a mess of it and make it broke. The drill
side for the</font></div>
<div><font face="Segoe UI">two thread sizes are within a
64th or so of being the same and the mount is 7/16" or
so wide so I have some meat to play with...</font></div>
<div> </div>
<div><font face="Segoe UI">suggestions?</font></div>
<div> </div>
<div><font face="Segoe UI">john</font></div>
<div> </div>
<div><img style="height: 570px; width: 858px;" alt=""
src="cid:part1.UA39l3ba.WoebArka@comcast.net" class=""
width="1499" hspace="0" height="1086" border="0"
align="bottom"> </div>
<div> </div>
<div><font face="Segoe UI">another option... drill
completely thru mount and find a mirror with a stud long
enough to pass thru completely</font></div>
<div><font face="Segoe UI">and secure with an acorn nut (or
something) at the back side of the mount</font></div>
<div> </div>
<div><img style="height: 453px; width: 622px;" alt=""
src="cid:part2.M0vQnZtf.rbXIMMmt@comcast.net" class=""
width="460" hspace="0" height="364" border="0"
align="bottom"></div>
<div> </div>
<div><font face="Segoe UI">another caveat... I don't want to
remove the mounts from the door... involves removing
windows and regulators</font></div>
<div><font face="Segoe UI">to get to the internal nuts.</font></div>
</div>
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-- <br>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">Eric Russell
<div>Mebane, NC</div>
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