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Old 10-24-2008, 07:56 AM   #1
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What would be the required wood screw depth for mounting?


Hi there,
can anyone tell me or point me to somewhere that i can find out what the holding strength of wood screws are?

I'd like to know how deep my wood screws should be when mounting a shelf to a wall (through 1/8" steel and drywall, with 3 screws vertically into 1 stud), that will hold a receiver thats almost 40 lbs.

any help would be greatly appreciated.

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Old 10-24-2008, 08:26 AM   #2
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What would be the required wood screw depth for mounting?


When you're working with wood, that alone has to many variables to say you'll get X amount of holding from a given screw. Some studs are more dense which means they will hold better than others.

Don't use a drywall screw to mount something like you're talking about. Go to one of the home centers, and look for structural screws. I like the GRK brand that have a larger head, and thicker shank than most. A good smaller hardware store cares the GRK brand and if you get them...don't forget to pick up a bit as well. The torx heads rock.

For what you're doing with the shelf...assuming the brackets are heavy enough, I would used 2" screws. It may be over kill, but then again it won't fall down.

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Old 10-24-2008, 09:00 AM   #3
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What would be the required wood screw depth for mounting?


thanks for the fast reply!

I'm can't sure of the thickness of peoples drywall... it could be 3/8" or 5/8".
assuming the worst lets say its (5/8") and adding the mounts plate, which is about actually about 3/16" a total of about 13/16". that would give the screw only 1 3/16" of dig into the wood. times 3 screws of course.

would that still be considered safe?
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Old 10-24-2008, 09:38 AM   #4
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What would be the required wood screw depth for mounting?


well over half of a 2" screw...yes it would be safe.
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Old 10-24-2008, 12:22 PM   #5
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What would be the required wood screw depth for mounting?


Great!

thanks so much.
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