Questions tagged [screws]

Questions relating to threaded fasteners and their use.

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86 votes
13 answers
97k views

How to remove screws with stripped heads?

I have wood screws whose heads are stripped from trying to remove them with a drill. The drill (or screwdrivers) can't grip the heads anymore. What can i use to remove these screws easily?
LordHits's user avatar
  • 1,015
82 votes
12 answers
69k views

Is there a case where nails are better than screws, from an engineering/structural standpoint?

Is there a case where nails are better than screws, from a structural standpoint? For instance: Say you used screws instead of nails on a backyard deck, when the design specifically called for nails. ...
Chris W. Rea's user avatar
  • 1,495
80 votes
7 answers
524k views

Understanding US Screw Sizes

I'm going to be building a workbench, so I've been 'screw shopping.' I need some explanation on the sizing of screws when they are advertised as (example) 6 x 3/4". I know that 3/4" is the length of ...
Calvin Allen's user avatar
  • 1,119
59 votes
14 answers
43k views

How to avoid stripping screw heads?

In at least two different contexts now (installing shower handrails, installing gate on fence) I've found myself stripping the head of the screw beyond all use. I must be doing something wrong, so ...
Paul Price's user avatar
  • 1,217
46 votes
7 answers
48k views

Why are there so many different types of screws (phillps/flat/hex/star/etc)?

Newbie question. Why is it that there's a bazillion different types of screws? Why can't we just always use one standard screw type? Are there advantages/disadvantages to the different types? Are ...
Doug T.'s user avatar
  • 1,387
37 votes
12 answers
311k views

How much weight can screws in drywall hold?

I've always had the question of how much weight can a single screw into a drywall withstand? For instance, I would like to do things like this: It's hung with 5 screws. The whole thing weighs ...
Gastón's user avatar
  • 473
32 votes
10 answers
14k views

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

Someone on the site suggested that I use "self-tapping screws", and gave me a link to the Wikipedia page about them. So, I went there, saw the definition: A self-tapping screw is a screw that can ...
einpoklum's user avatar
  • 2,757
32 votes
8 answers
157k views

How do I rehang a wooden door with worn screw holes?

I have a wood door in one of my rooms where the top screws no longer hold the hinge to the wall because the screw holes have worn loose. I have tried slightly larger screws and filling with wood ...
user avatar
31 votes
12 answers
841k views

How can I remove a really stuck screw?

I often come across screws that just won't budge with a manual screwdriver or even a driver bit in a drill. They are of different screw types and heads in a variety of different materials. What are ...
Tester101's user avatar
  • 131k
31 votes
6 answers
53k views

Should I use nails or screws for hanging drywall on the ceiling?

I'm replacing water-damaged drywall on my ceiling and was considering using screws. Other than cost, is there any other reason I should use nails instead? Or am I too paranoid that nails won't have ...
Doresoom's user avatar
  • 15.7k
26 votes
2 answers
108k views

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

I noticed that in some (many?) countries, screw sizes are listed as "M+number", e.g. M3, M4, M5 and so on. What does this size designation mean?
einpoklum's user avatar
  • 2,757
25 votes
6 answers
24k views

What benefit do plasterboard/drywall screws have?

I have some plasterboard screws like this: However, without a drill I have a job getting them into the wall. Am I safe to use normal screws on hangings that aren't going to be taking a great deal of ...
Jivings's user avatar
  • 353
23 votes
2 answers
7k views

Will removing shelving screws from studs damage the studs?

We live in a newly built home. My husband hung some Ikea shoe bins on the wall and mounted them in to the studs. I am going to paint the hallway and would like to remove the bins and hooks, patch the ...
Lauren's user avatar
  • 231
22 votes
4 answers
11k views

What is the use for this different threading near the head of a large screw?

I'm inquiring about the strange threading at the base of this screw: These were used in somewhat heavy-duty outdoor construction. What is the purpose of that corkscrew, and is it safe to replace it ...
DarkLightA's user avatar
21 votes
7 answers
136k views

How to unscrew screws that are barely accessible?

I need to remove the face of a fake drawer that is screwed from behind. Unfortunately, a kitchen sink is preventing me from using a screwdriver. There is approximatively 4cm of space. The screw head ...
alecail's user avatar
  • 3,166
20 votes
11 answers
23k views

How to remove very stuck stripped screws?

These things are caught in hard wood. I made the dumb mistake of not drilling pilot holes. Rubber band trick failed Screw drill and removal bit failed JB welding a bolt worked for 2/5. Trying again, ...
SwimBikeRun's user avatar
20 votes
5 answers
22k views

How to keep screws in a hollow door

I have a hollow core interior door. The screws for the handle keep pulling out. To fix this I've used the biggest screws that will fit. I've tried a couple of different types of glue, and I've tried ...
GdD's user avatar
  • 5,229
20 votes
3 answers
7k views

How do I unscrew this screw to disassemble a dresser?

As you see it looks like it should just unscrew, but it doesn’t turn. I guess the little arrow on one side should point up/down — but even when I do that, the screws don’t slide out. The other side of ...
Tim's user avatar
  • 301
19 votes
6 answers
13k views

How do I remove these Ikea screws? (studs inside holes)

I bought and assembled an Ikea sofa bed (asssembly instructions here). I'm moving soon and want to take apart the couch to make it easier to lift. Some of the screws needed for the assembly come in 2 ...
J. Yee's user avatar
  • 191
19 votes
6 answers
31k views

Should I use nails or screws to refasten my subfloor to the joists?

My subfloor is squeaky, and there's a small window of opportunity I'll have to fasten it down before/during my carpet being replaced. I have available to me a nice corded drill, and an air-powered ...
Bryan Boettcher's user avatar
19 votes
6 answers
79k views

How to remove screws from old decking

I have some decking in my back garden and some of the planks need replacing. However, the screws are difficult to remove. Some have rusted/weakened sufficiently so that I've managed to remove the ...
Matt Hogan-Jones's user avatar
17 votes
14 answers
123k views

What is the best technique for using a drill to insert screws?

It looks so easy on the DIY programs, but I battle to insert screws using my drill. The screwdriver bit keeps slipping out, and it damages the screw head. Is there a neat trick for this? Should I ...
rbrayb's user avatar
  • 397
17 votes
4 answers
8k views

Technique for driving hinge screws to minimize misalignment

When fitting hinge screws I've noticed that, unless the pilot holes are centered exactly on the holes in the hinge and at a precise (within 2-3 degrees) horizontal/lateral right angle to the hinge ...
Brybeck's user avatar
  • 971
17 votes
8 answers
14k views

Wood glue versus epoxy for doweling stripped screw holes

I've come across two schools of thought for gluing dowels in place. PVA wood glue, such as Titebond. Two-part epoxy, such as Araldite. Bearing in mind long-term stability, which is preferable for ...
Brybeck's user avatar
  • 971
16 votes
8 answers
5k views

Why do so many of my screws break?

I wouldn’t be surprised if I had got my wood screw pack from AliExpress but it’s from Home Depot and I believe Everbilt is at least not a random brand. Yet many of the screws just break if I screw ...
divB's user avatar
  • 1,201
15 votes
2 answers
11k views

What's the term for a hole with a screw thread?

I'm replicating a drawer handle that fits on an M4 screw. If you'd look inside the plastic hole, you can see a gold-colored metal tube that has screw threads. That's what the screw screws into. My ...
Ram Rachum's user avatar
14 votes
10 answers
25k views

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

I am fitting a window blind on a wall. The wall is made of plaster board as far as I have known. I have drilled a hole on wall bigger than the screw size. The drilled hole on the wall has a diameter ...
hunterex's user avatar
  • 253
14 votes
3 answers
5k views

What kind of screw is this from a bar stool?

I have a barstool that has lost several examples of the screw pictured below, and I do not have calipers to measure it precisely. The screw is pictured atop a U.S. quarter coin. Since the condition of ...
Joe Mack's user avatar
  • 243
14 votes
3 answers
5k views

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

One of the things that's always been drilled into me is "loose wires cause fires," and that's something I always remain conscious of when changing out devices. But is there such a thing as &...
smitelli's user avatar
  • 591
14 votes
5 answers
11k views

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

The SENSE M2488C computer monitor pictured here has 4 machine screw holes at standard spacing around the label on the back of the monitor. I plan to mount it from a ceiling mount, not on my desk. I ...
talkaboutquality's user avatar
14 votes
2 answers
4k views

Screw with two grooves?

Hi there: this screw from my bathroom vanity handle has broken. I'm curious about the two grooves that you might be able to see on the remaining screw. Do they serve any purpose? Should I be trying to ...
spindoctor's user avatar
13 votes
1 answer
3k views

How do I unscrew these?

I'm a college kid trying to sneak my boyfriend in my dorm window. The first section is the holder on the window, the second part is the end of the slider on the window. All I have to do is disconnect ...
Rose's user avatar
  • 139
12 votes
4 answers
8k views

What screwdriver I should use for this screw head?

I am trying to unscrew the screw head you see in the picture. It is from the kitchen faucet handle. From looking online, it is usually a hex screw head. I tried a hex-key wrench, it didn't work, and ...
Lloyd's user avatar
  • 121
12 votes
10 answers
3k views

How can I turn these table leg attachment screws?

I bought a used table and the screws holding it together are of a kind that I've never seen before. Unfortunately, some of them are loose and I need to tighten them. They are impossible to turn with ...
B K's user avatar
  • 389
12 votes
9 answers
8k views

What type of screws/anchors to fasten a closer to a steel door

What are some proper screws or anchors to use for affixing something to a steel walk-in door? The example for this question will be attaching an automatic closer to an exterior steel door. The door is ...
Bort's user avatar
  • 450
12 votes
5 answers
3k views

What kind of screw has a wide flange with a smaller head above?

What is the exact name of this screw type?
cern's user avatar
  • 129
12 votes
7 answers
2k views

What tool should I use to remove this screw in my miter saw motor housing?

I have a miter saw from the company "Elektra Beckum", which went out of business several years ago. The saw worked flawlessly until my house got flooded last summer. Now I had the time to ...
steloe's user avatar
  • 223
12 votes
4 answers
100k views

Is it ok to screw into a steel door?

I am looking to hang some blinds over the window on my front door. Is ok to screw the mounting hardware directly into the door?
Adam B's user avatar
  • 223
12 votes
3 answers
21k views

What are the implications of driving a drywall screw too far into the sheet?

I'm not gonna lie. The early stages of my very first home improvement project completely smacks of novice DIY'er. I did so many things wrong that I've since learned from, but the first mistakes are ...
oscilatingcretin's user avatar
12 votes
2 answers
10k views

Are these drywall screws properly driven/countersunk?

Related to this question. Even though I might be cluttering up SE with questions about driving drywall screws, I feel they will ultimately be helpful since I have been unsuccessful in finding images ...
oscilatingcretin's user avatar
11 votes
7 answers
3k views

How to remove screws deep in a mailbox that has a stripped head

I thought replacing this mailbox would be easy... four bolts out and a new mailbox (identical to the old which has exterior issues) in. But then I noticed the four bolts were actually Phillips head ...
Sunny's user avatar
  • 113
11 votes
5 answers
101k views

How do you screw in double-ended screws?

I have a flat pack shelving unit to put together. It has double ended screws. According to the instructions you just screw them in using your hands. This is impossible: the pre-drilled holes seem way ...
Jodie's user avatar
  • 111
11 votes
3 answers
19k views

What can I use to lubricate screws?

I am re assembling a swing set made of pretty hard wood. My electric drill won't drive the screws in all the way and I have to try to use plain screwdriver. I don't want to strip the heads though. Is ...
Daniel Williams's user avatar
11 votes
4 answers
148k views

What type of screw is the most resistant to rust: galvanized, stainless steel, or deck screws?

How do the following screw types fare in an outdoor (wet) long-term application? Galvanized screw: Stainless steel screw: "Deck" screw:
Fil's user avatar
  • 801
10 votes
4 answers
16k views

Finding the right size of nut for a bolt

I have a bolt with a thread pitch of .8mm and a diameter of 3.3mm. I am trying to find the correct size of nut for it, however the ISO thread chart says that a .8mm thread is M5, but should have a ...
Frayt's user avatar
  • 203
10 votes
10 answers
5k views

Rusted screws in outdoor outlet box

Summarize the problem I need help removing rusted screws from an outdoor outlet box. A few notes: The outlet box was used for an outdoor light that I removed I turned off the breaker I have access to ...
Ryan's user avatar
  • 557
10 votes
11 answers
50k views

Why can't I drive this Tapcon into concrete?

I'm trying to drive a 2 1/2" long 3/16" diameter Tapcon into a 50 year-old concrete slab/subfloor to attach a new toilet flange. The instructions on the case of Tapcons said to drill a hole ...
iLikeDirt's user avatar
  • 12.6k
10 votes
4 answers
4k views

What's this bolt head type and how can I open it?

There is a bolt screwed inside a long hole: I don't know the bolt head type. Is there a trick to open it?
Megidd's user avatar
  • 207
10 votes
4 answers
25k views

I modified a nail-in electrical box to use screws instead of nails. Is there some code that prevents that?

Ever since I dove into the electrical side of things with my project, I've encountered a bunch of code restrictions. One thing that wouldn't surprise me if it was a violation of code is what I've ...
oscilatingcretin's user avatar
10 votes
2 answers
4k views

What is this screw called?

I need a screw for some outside door handles, and I cannot rethread the holes as some parts are brittle plastic and other parts are soft metal. I need an exact replacement for this screw, but I do ...
George's user avatar
  • 275

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