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Locked: Anchor size for 1/4" drill bit?

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Feb 1, 2009
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Anchor size for 1/4" drill bit?

Trying to install a hose reel on my brick walls. I brought this drill bit:

https://www.homedepot.com/p/Bosch-1-4-i ... /301374920

And these 1/4" x 1-3/4" tapcon concrete screw anchors:

https://www.homedepot.ca/product/tapcon ... 1000156197

I tripled checked that the drill bit size would work with the Tapcon screws before making the holes....but low and behold the screws are too "loose" meaning the holes are slightly too big for some reason (kept it steady while drilling). The back of the box said drill bit 1/4" too.

The tapcon screws did come with a drill bit but I bought the Bosch one because it was a hex shank and would fit with my impact driver.

So my question is...instead of drilling new holes again, what plastic anchors can I fill the pre drilled holes with? I tried searching anchors for 1/4" but couldn't find anything relevant.

Any help would be appreciated, thank you!
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Sr. Member
Jan 21, 2011
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3/16” drill bit for 1/4” tapcons. 1/4” wall plugs would be needed for 1/4” hole
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Dec 19, 2009
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3/16-in .tapcon uses a 5/32-in. bit
1/4-in. tapcon uses a 3/16-in. bit
3/8-in. tapcon uses a 5/16-in. bit
1/2-in. tapcon uses a 7/16-in. bit
5/8-in. tapcon uses a 1/2-in. bit
3/4-in. tapcon uses a 5/8-in. carbide tipped bit

https://www.newequipment.com/plant-oper ... pcon-screw
[OP]
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lamin wrote: 3/16” drill bit for 1/4” tapcons. 1/4” wall plugs would be needed for 1/4” hole
pootza wrote: 3/16-in .tapcon uses a 5/32-in. bit
1/4-in. tapcon uses a 3/16-in. bit
3/8-in. tapcon uses a 5/16-in. bit
1/2-in. tapcon uses a 7/16-in. bit
5/8-in. tapcon uses a 1/2-in. bit
3/4-in. tapcon uses a 5/8-in. carbide tipped bit

https://www.newequipment.com/plant-oper ... pcon-screw
Thank you both... really shitty labelling. This is what the box said and screwed me up.
20210515_191747.jpg
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Jan 21, 2011
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Your anchor size is 5/16” and the drill bit is 1/4”, which is correct. How did you tighten the tapcon?
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redkulat wrote: Thank you both... really shitty labelling. This is what the box said and screwed me up.

20210515_191747.jpg
Care to explain how it's wrong labelling and how is it shitty? I have installed hundreds of tapcons....
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tmkf_patryk wrote: Care to explain how it's wrong labelling and how is it shitty? I have installed hundreds of tapcons....
The box labels it as 1/4" drill bit which is what I used. But someone above mentioned it's a 3/16" drill bit for a 1-3/4" tapcon anchor. If that's not what the box intended to state it's misleading. I'm not saying the actual anchor is shitty.
20210515_191747.jpg
[OP]
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lamin wrote: Your anchor size is 5/16” and the drill bit is 1/4”, which is correct. How did you tighten the tapcon?
Unfortunately the tapcon couldn't be tightened at all. I went to screw it in and it didn't have any resistance and slipped right in.
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Jan 25, 2007
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Drthorne wrote: Tapcons are not that great for brick and block

Get 1/4" sleeve anchors
https://www.homedepot.ca/product/red-he ... 1001071860

1/4-inch x 2-1/4-inch Steel Hex Head Sleeve Anchor with Zinc Plated Finish - 1 Pack

https://www.homedepot.ca/product/red-he ... 1001072766
This is how to salvage where you are at. Tapcons are ok, but for a hose reel if you pull on it to get the hose out like me, you are better off with sleeve anchors.
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Drthorne wrote: Tapcons are not that great for brick and block

Get 1/4" sleeve anchors
https://www.homedepot.ca/product/red-he ... 1001071860

1/4-inch x 2-1/4-inch Steel Hex Head Sleeve Anchor with Zinc Plated Finish - 1 Pack

https://www.homedepot.ca/product/red-he ... 1001072766
Jerico wrote: This is how to salvage where you are at. Tapcons are ok, but for a hose reel if you pull on it to get the hose out like me, you are better off with sleeve anchors.
Thank you! I'll take a look at these, I think I'll just have to drill a bit deeper as these seem slightly longer.
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redkulat wrote: The box labels it as 1/4" drill bit which is what I used. But someone above mentioned it's a 3/16" drill bit for a 1-3/4" tapcon anchor. If that's not what the box intended to state it's misleading. I'm not saying the actual anchor is shitty.

20210515_191747.jpg
The box also says that a 1/4" drill bit is for a 5/16" Tapcon. You said you bought 1/4" Tapcon. Is the back of the box mislabeled?
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redkulat wrote: The box labels it as 1/4" drill bit which is what I used. But someone above mentioned it's a 3/16" drill bit for a 1-3/4" tapcon anchor. If that's not what the box intended to state it's misleading. I'm not saying the actual anchor is shitty.

20210515_191747.jpg
You clearly have no idea what your posting.

Your tapcons anchor is not 1-3/4 but it is indeed 5/16.
And the correct bit for this is 1/4" so that gives you 1/16" of interference when the tapcons screws I to material and makes its own threads.


If you read the main part of the box, should say concrete anchors..... what are you drilling into again?
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derass wrote:
The box also says that a 1/4" drill bit is for a 5/16" Tapcon. You said you bought 1/4" Tapcon. Is the back of the box mislabeled?
tmkf_patryk wrote: You clearly have no idea what your posting.

Your tapcons anchor is not 1-3/4 but it is indeed 5/16.
And the correct bit for this is 1/4" so that gives you 1/16" of interference when the tapcons screws I to material and makes its own threads.


If you read the main part of the box, should say concrete anchors..... what are you drilling into again?
Yes you're both right i incorrectly stated the length as the diameter.

However that doesn't negate the fact I still used the correct drill bit size...

Also it can be used on brick, not just concrete.
20210516_073510.jpg
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redkulat wrote: Also it can be used on brick, not just concrete.
The hand held drill wobbles a bit no matter how strong you are, and brick crumbles-doesn't cut as clean as concrete. You could probably use 3/8 tapcons in those holes but better off with lead anchor sleeves for a hose reel.
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Nov 12, 2006
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tmkf_patryk wrote: Care to explain how it's wrong labelling and how is it shitty? I have installed hundreds of tapcons....
redkulat wrote:
The box labels it as 1/4" drill bit which is what I used. But someone above mentioned it's a 3/16" drill bit for a 1-3/4" tapcon anchor. If that's not what the box intended to state it's misleading. I'm not saying the actual anchor is shitty.
20210515_191747.jpg
There is a point where some common sense has to take over.
Somewhere in this sequence, did you not ask yourself how a 1/4" anchor would secure itself in a 1/4" hole?
Also, they provided the proper bit and there is a mismatch to the one you purchased. Did you not wonder why?

Instead of plastic, I probably would now go with lead.
Maybe others have suggestions.
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May 28, 2007
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Did you use impact driver or hammer drill?
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Since I don't use tapcons that often and have made mistakes in the past with the right drill bit size, I now always check by first taking a scrap block of wood, drilling a hole in it and then trying the tapcon out on it. If the tapcon screws in reasonably tight with that size of bit then I feel comfortable in going ahead and using that size drill bit on the concrete.
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Sep 8, 2017
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redkulat wrote: Yes you're both right i incorrectly stated the length as the diameter.

However that doesn't negate the fact I still used the correct drill bit size...

Also it can be used on brick, not just concrete.

20210516_073510.jpg
You did not use the correct drill bit size. You said that you used a 1/4" bit. That is for 5/16" Tapcon. You said you bought 1/4" Tapcon, which require a 3/16" bit.

But I can see why this happened, the back of your 1/4" Tapcon package is mislabelled with information for 5/16" Tapcon.

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