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Drywall screw anchors Daniel Prince 09-08-2006
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Posted by Daniel Prince on September 8, 2006, 1:28 am
I like to use ribbed plastic screw anchors to hold screws in drywall
for light duty use. My problem is that they never come with ANY
instructions so I always have to guess what size of drill to use and
what size of screw anchor to use.

The plastic screw anchors I have come in four sizes, each a
different color. From smallest to largest they are gray, red,
green, and yellow. I use mostly drywall screws because they are
inexpensive and easy to drive with a cordless drill. Drywall screws
are number six when they are two inches long or shorter.
Two-and-a-half inch, and up, are number eight.

I have been using the red plastic screw anchors with the number six
screws and the green ones with number eight screws. Are those the
correct sizes?

What sizes of drill bits should I use for each size of plastic screw
anchor? What size of plastic screw anchor should I use with each
size of screw?
--
Never ever let your brain explode. It's VERY bad for you and
it leaves a terrible mess for someone to clean up.

Posted by professorpaul on September 8, 2006, 8:42 am
You want a hole size where the plastic anchor is a snug fit. I usually
have to tap it in with a small hammer, or the handle of the
screwdriver. Typically, around 3/16" does the trick for the small ones,
and 1/4" for the larger ones. I'd do a little experimenting.


Posted by RicodJour on September 8, 2006, 9:18 am

Daniel Prince wrote:
> I like to use ribbed plastic screw anchors to hold screws in drywall
> for light duty use. My problem is that they never come with ANY
> instructions so I always have to guess what size of drill to use and
> what size of screw anchor to use.
>
> The plastic screw anchors I have come in four sizes, each a
> different color. From smallest to largest they are gray, red,
> green, and yellow. I use mostly drywall screws because they are
> inexpensive and easy to drive with a cordless drill. Drywall screws
> are number six when they are two inches long or shorter.
> Two-and-a-half inch, and up, are number eight.
>
> I have been using the red plastic screw anchors with the number six
> screws and the green ones with number eight screws. Are those the
> correct sizes?
>
> What sizes of drill bits should I use for each size of plastic screw
> anchor? What size of plastic screw anchor should I use with each
> size of screw?

Those plastic anchors are not designed for drywall screws. Drywall
screws suck in shear and have thinner shafts than other screws. The
size of the drill bit should be the same as the smallest diameter of
the anchor (diameter without ribs or fins).

R


Posted by bill allemann on September 8, 2006, 12:25 pm
It sounds like you have masonry anchors. They aren't for drywall.
I believe most products for that use "hollow wall anchors" or a similar
term.

Bill
>I like to use ribbed plastic screw anchors to hold screws in drywall
> for light duty use. My problem is that they never come with ANY
> instructions so I always have to guess what size of drill to use and
> what size of screw anchor to use.
>
> The plastic screw anchors I have come in four sizes, each a
> different color. From smallest to largest they are gray, red,
> green, and yellow. I use mostly drywall screws because they are
> inexpensive and easy to drive with a cordless drill. Drywall screws
> are number six when they are two inches long or shorter.
> Two-and-a-half inch, and up, are number eight.
>
> I have been using the red plastic screw anchors with the number six
> screws and the green ones with number eight screws. Are those the
> correct sizes?
>
> What sizes of drill bits should I use for each size of plastic screw
> anchor? What size of plastic screw anchor should I use with each
> size of screw?
> --
> Never ever let your brain explode. It's VERY bad for you and
> it leaves a terrible mess for someone to clean up.



Posted by RicodJour on September 8, 2006, 1:44 pm
Daniel Prince wrote:
> I like to use ribbed plastic screw anchors to hold screws in drywall
> for light duty use. My problem is that they never come with ANY
> instructions so I always have to guess what size of drill to use and
> what size of screw anchor to use.

If you're always putting the anchors in drywall forget about the
drilling operation and use self-drilling anchors. Much faster, one
less operation, and they hold well.

http://www.simpsonanchors.com/catalog/mechanical/sure-wall/index.html

Any hardware store or home center will have them.

R


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