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I want to hang a 26 inch flat panel monitor on a wall that has metal studs. What kind of fastener should i use to attach the mounting bracket to the stud through drywall?

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2 Answers 2

up vote 11 down vote accepted

It depends on the type of mount. If it's an articulating arm mount, the bending moment at the wall is going to be a lot higher than if you're doing a flush mount. In that case the safest option would be to open up the drywall and put 2x4s inside the metal studs, and use the included wood screws to attach the mount to the new 2x4s.

If this is a load bearing wall, and you're certain the studs are heavier 20-gauge load bearing studs, you might get by mounting an articulating arm using toggle bolts like these. If the wall is non-load-bearing, it's likely made of lighter 25-gauge studs, which just don't have the localized rigidity to support this type of mount so you're stuck reinforcing with 2x4s as I described above.

If you're doing a flush (or nearly so) mount, then you can get by with toggle bolts even if you have the lighter studs.

I wouldn't recommend any kind of self-tapping screw in a load bearing application like this. It doesn't take much overtorquing (especially with 25-ga studs) to leave them just on the verge of pulling right back out.

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+1 Good point on the possibility of an articulating arm mount - that's going to put a lot more normal force rather than shear on the top screws. –  Doresoom Sep 8 '10 at 14:51
    
this is exactly what i ended up doing, and they work great. –  longneck Nov 8 '10 at 19:00

I'd imagine steel stud drywall screws should work fairly well if you've got 20 gauge studs. They've got a finer thread than regular drywall screws, and are self-tapping. This forum has some discussion on the topic as well.

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See @Mike Powell's answer regarding the gauge of the stud. The steel stud drywall screws recommended here mention 14-20 gauge steel, which would work fine, but you need to make sure you have 20 gauge studs first. –  Jeff Widmer Sep 8 '10 at 14:50
    
@Jeff: True, I doubt the OP wants to tear open the wall and take calipers to his studs. –  Doresoom Sep 8 '10 at 14:56

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