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drain plug question

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Old Apr 4, 2006 | 07:40 AM
  #1  
2002SilverZ28's Avatar
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Default drain plug question

somehow the threads on my drain/fill plug got chewed up on my new moser 9". it threaded in halfway by hand and then got tight so i put the wrench on it and i chewed up a thread or two.

anyone have an idea on what tap and die size i would need i know that it is 14 threads per inch, but i am unsure about the size.

any other ideas?

thanks.
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Old Apr 4, 2006 | 09:09 AM
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May be that you'd get lucky, and find one of those self-
tapping oil pan plugs at the AutoZone fits the thread and
will clean it "well enough" to avoid re-tapping larger (esp.
if you get a nice bungy O-ring to seal with).
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Old Apr 4, 2006 | 09:16 AM
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If it's 14 tpi it's most likely 7/16 NC. I have a huge tap and die set, and the only 14 tpi tap is a 7/16 NC (course).
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Old Apr 4, 2006 | 09:24 AM
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Take the plug down to the auto part store and match it to the tap you need and then see if it will clean up the threads for you.
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Old Apr 4, 2006 | 09:22 PM
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thanks for the input guys. I ended up going to J&L Industrial supply and picked up a tap and die(1/2 14TPI)

i smoothed out some of the rough threads and the drain plug went in like a charm
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