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63 votes
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How to avoid stripping screw heads?

What am I doing wrong? If you're stripping the heads, Phillips head screws probably aren't the right kind for the job. They cam out under excessive torque [1]. And once they do, the bit becomes a ...
fixer1234's user avatar
  • 6,118
56 votes

How much weight can a large screw safely hold in a ceiling plasterboard?

Is this a bad idea? Only if you want the speakers to stay in the ceiling. Don't forget, you're not simply attaching 8kg to a ceiling made of highly compressed powder sandwiched between two pieces of ...
FreeMan's user avatar
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51 votes
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What kind of screw is this from a bar stool?

The type of drive (hex socket, here) does not matter too much. What matters is: That this is a machine screw, not a wood screw. (Machine screws generally have blunt ends and fine threads; wood screws ...
Kevin Reid's user avatar
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49 votes
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How to keep screws in a hollow door

I would not mount the latch to the door skin. Even if you can attach it well, chances are you'll pull the skin off the door over time. It's not designed to withstand that sort of stress. Instead, use ...
isherwood's user avatar
  • 139k
49 votes

How do I unscrew this screw to disassemble a dresser?

That is not a screw that comes out. It is a twist lock mechanism. Turn it to the left as far it goes and pull boards apart. It has a bolt from the side onto which it holds. It looks like something ...
Traveler's user avatar
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45 votes

How to avoid stripping screw heads?

You may be having one or more of the problems as follows: You are using the wrong size driver bit for the screw type. Make sure the bit fits perfectly in the slot of the screw. You may be trying to ...
Michael Karas's user avatar
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45 votes
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Will the coating on deck screws interact poorly with untreated lumber?

Deck screws are fine for regular wood studs. Untreated wood contains no copper, so it will cause effectively no corrosion of fasteners beyond ordinary mechanisms like water causing rust. Your deck ...
popham's user avatar
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43 votes

How to fit a screw into a drilled big hole on wall?

For this you can use wall drilling anchors as shown in the images below. They are also known as wall plugs or rawl plugs. You can get them from any hardware shop.
Ramesh's user avatar
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43 votes
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Why do so many of my screws break?

You're trying to drive screws directly into hardwood? Or, even, really old softwood? Doesn't matter much what screw or brand you use, you'll end up breaking them. You need to drill a pilot hole that ...
FreeMan's user avatar
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41 votes
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What is a NON-self-tapping screw? What does self-tapping mean, really?

To "tap" in this context means to cut threads into a hole. For this topic, we can think of three basic things a screw can do - drill its own hole, tap its own threads, or just force its way into the ...
JPhi1618's user avatar
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40 votes
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How to remove very stuck stripped screws?

Locking pliers, which is the generic term for a class of product often called by the name of one registered trademark (Vise Grips® - no particular endorsement implied, but some of the cheaper knock-...
Ecnerwal's user avatar
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39 votes

What is a NON-self-tapping screw? What does self-tapping mean, really?

Partly you're being confused between "wood screw", and "machine screw" aka bolt. Wood screws self-thread by nature. Bolts are not meant to self-thread at all (unless they are). When you fit a screw, ...
Harper - Reinstate Monica's user avatar
37 votes

What do the numbers in screw sizes M3, M4 etc. mean?

Mn for a number n means that the diameter of the screw, projected onto the transverse plane, is n milimeters - including the threading. The "M" stands for "Metric" (as opposed to ...
einpoklum's user avatar
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36 votes
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What do the numbers in screw sizes M3, M4 etc. mean?

There are a few more numbers for a complete description. It's pretty much a world-wide system described by several ISO standards, but there are occasional oddities (slight differences between ISO and ...
Ecnerwal's user avatar
  • 217k
33 votes

What screwdriver I should use for this screw head?

It appears that the hex sides of that screw head have been rounded off due to the use of an ill-fitting hex wrench. A metric and an SAE hex wrench will both fit in there, but the use of the wrong one, ...
FreeMan's user avatar
  • 47.4k
33 votes

How to keep screws in a hollow door

In the Netherlands (and other parts of Europe) we use a 'patentbout' for this situation. The holes are through the entire door and line up with the shields.
refro's user avatar
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32 votes
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Technique for driving hinge screws to minimize misalignment

As you are a perfectionist for installing hinge screws perfectly it turns out that there is a product made just for this purpose. It is a self centering pilot drill that aims the pilot drill bit right ...
Michael Karas's user avatar
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31 votes
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Wood glue versus epoxy for doweling stripped screw holes

Wood glue, hands down. Wood glue is designed to penetrate the wood for a tighter bond. Properly done, wood glue is stronger than the surrounding wood. I have chairs I've wood glued and clamped and ...
Machavity's user avatar
  • 24.9k
30 votes

Will the coating on deck screws interact poorly with untreated lumber?

That is incorrect. It’s PT wood that has corrosive properties. If the screw is coated to resist that it can handle untreated stud no problem
Kris's user avatar
  • 4,555
29 votes

Will removing shelving screws from studs damage the studs?

As long as they are normal screws and you unscrew them they won't compromise the studs or their integrity. If you rip the screws out (with a hammer for example) that could compromise the studs. If ...
depperm's user avatar
  • 840
29 votes

How do I unscrew this screw to disassemble a dresser?

These are called cams. There's two parts to them. The first part is the cam screw (example) The second part (the one visible in your picture) is sometimes called a cam head, lock or connector (...
Machavity's user avatar
  • 24.9k
28 votes

How to avoid stripping screw heads?

What am I doing wrong? Using a drill to drive screws. I used to have the same problem as you, until I switched to using an Impact driver instead. Drills are designed for drilling holes. They deliver ...
AndyT's user avatar
  • 1,878
28 votes

Does it cause problems to overtighten connections on receptacles/switches?

Recent (last 10 or 20 years, maybe a bit more) code says to use torque wrenches/screwdrivers for all connections now. You found some problems with going too tight. In addition, you also squeeze the ...
crip659's user avatar
  • 24.8k
27 votes

Choosing the right machine screw for a threaded hole in a computer monitor mount

You already discovered the answer for your monitor. I'll leave a general answer for others with a similar question. The Video Electronics Standards Association has a set of standards for mounting ...
fixer1234's user avatar
  • 6,118
27 votes

What screwdriver I should use for this screw head?

I mostly agree with FreeMan, but I think this was originally a Torx (six-pointed star) drive. The corners look deeper than I'd expect from an Allen drive. I would get a set of Torx bits and look for ...
isherwood's user avatar
  • 139k
26 votes

What is a NON-self-tapping screw? What does self-tapping mean, really?

Pretty much any machine screw --
Hot Licks's user avatar
  • 2,093
26 votes
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Why can't I drive a 12'' screw into 6x6 landscape timber?

If the pieces of wood you are drilling are not tightly pinned/clamped to each other, and are able to move around relative to each other while drilling, that is going to cause the screw to bind up and ...
Harper - Reinstate Monica's user avatar
26 votes
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How to remove screws deep in a mailbox that has a stripped head

Probably need to "think outside the box" a bit. Will the existing mailbox be disposed after it is removed? Then don't worry about removing it delicately. Pick up a claw hammer, tin snips, a ...
Greg Hill's user avatar
  • 30.8k
25 votes

How to avoid stripping screw heads?

It could be that the driver you are using is not a Phillips but a Pozidriv or the screws are Pozidriv and the driver is a Phillips. See https://www.finehomebuilding.com/2015/09/16/what-is-the-...
Jim Stewart's user avatar
  • 21.9k
25 votes
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What's the term for a hole with a screw thread?

That is simply called a threaded insert. It is either first placed into the mold, then plastic injected, or pressed in after the plastic handle is injected. Google images for "threaded ...
Steve's user avatar
  • 266

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