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Old 12-19-2019, 08:32 PM   #1
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Default Non self-tapping "self-tapping" screws

Clearly they have no idea what "self-tapping" means.


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Old 12-19-2019, 08:47 PM   #2
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technically they are self taping the thread into the concrete..they did not say "self drilling"...I know you are thinking of the self drilling screws for flue pipe or thin metal..those do both..drill and tap threads..
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Old 12-23-2019, 07:09 AM   #3
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They look ok to me....

I have never used another brand called tapp-cons before so I dont have anything to compare them to....

I wonder if you can get them out after you drilled them in??

I was brought up using plastic red-devils


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Old 12-23-2019, 08:33 AM   #4
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Originally Posted by Master Mark View Post
They look ok to me....

I have never used another brand called tapp-cons before so I dont have anything to compare them to....

I wonder if you can get them out after you drilled them in??

I was brought up using plastic red-devils


Yep Tap-Cons can be removed. Used many to set closet flanges. Problem is they don't always bite the concrete. We used to drill and drive a piece of wood or if in a wet area piece of treated or ABS into the hole and use a stainless screw.
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Old 12-23-2019, 09:06 AM   #5
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Quote:
Originally Posted by GAN View Post
Quote:
Originally Posted by Master Mark View Post
They look ok to me....

I have never used another brand called tapp-cons before so I dont have anything to compare them to....

I wonder if you can get them out after you drilled them in??

I was brought up using plastic red-devils <img src="https://www.plumbingzone.com/images/smilies/devil.png" border="0" alt="" title="Devil" class="inlineimg" />


Yep Tap-Cons can be removed. Used many to set closet flanges. Problem is they don't always bite the concrete. We used to drill and drive a piece of wood or if in a wet area piece of treated or ABS into the hole and use a stainless screw.
That's how the scotsmen said they set flanges in uk... they would drill holes in concrete and pound wooden dowels in them so they were really tight and use screws from flange into that
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Old 12-23-2019, 06:38 PM   #6
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That's how the scotsmen said they set flanges in uk... they would drill holes in concrete and pound wooden dowels in them so they were really tight and use screws from flange into that



That's not just a scottish thing. Guys have been doing that since screws were invented here. Some old guys would use lead, lead wool, solder, you name it. It's the original version of those colored plastic anchors.





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Yep Tap-Cons can be removed. Used many to set closet flanges. Problem is they don't always bite the concrete. We used to drill and drive a piece of wood or if in a wet area piece of treated or ABS into the hole and use a stainless screw.



I use tapcon screws all the time and never have an issue with them not biting. The only issue I run into is if the hole isn't drilled deep enough or you accidentally knock some of the dust in then the screw bottoms out. I try to avoid driving them with the impact as that can snap them.


Tap cons make great wood screws. Though they are a bit expensive.
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