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Questions tagged [screws]

Questions relating to threaded fasteners and their use.

79
votes
13answers
61k 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?
75
votes
12answers
48k 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. ...
66
votes
7answers
380k 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 ...
52
votes
14answers
15k 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 ...
41
votes
7answers
26k 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 ...
31
votes
12answers
257k 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 ...
29
votes
5answers
36k 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 ...
26
votes
12answers
533k 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 ...
26
votes
7answers
78k 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 ...
21
votes
6answers
18k 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 ...
20
votes
7answers
56k 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 ...
19
votes
6answers
6k 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 ...
19
votes
4answers
6k 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 ...
18
votes
6answers
26k 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 ...
17
votes
14answers
100k 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 ...
16
votes
5answers
23k 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 ...
14
votes
10answers
6k 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 ...
13
votes
2answers
3k 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 ...
12
votes
5answers
5k 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 ...
12
votes
1answer
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 ...
11
votes
2answers
6k 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 ...
10
votes
4answers
3k 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 ...
10
votes
2answers
3k 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 ...
10
votes
3answers
10k 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 ...
9
votes
4answers
6k views

How do I unscrew a hex screw that doesn't have any grip anymore? [duplicate]

I messed up the screw that fits this tip of this particular type of screwdriver bit (circled in red): That screw now has almost no edges and is basically oval. I tried lubricating the screw so that I ...
9
votes
3answers
10k 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 ...
9
votes
2answers
985 views

How can I fasten a low-voltage plate to drywall?

I do not have much experience with home improvement related things. I moved into my first apartment and I saw that the internet coaxial cable was pushed inside the outlet. I loosened the screws and ...
9
votes
4answers
54k 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 ...
9
votes
3answers
2k views

How can I drive a screw with an impact drill?

I bought a Bosch PSB 650 RE Impact Drill and I have some question about how to use it for driving screws. I know it's not its primary function but for a few screws here and there it should work. I ...
8
votes
4answers
3k views

How do I use threaded inserts?

I got these fasteners with table legs that I bought for a formica table top. I get that I need to embed the outer part with the big thread into the table, and then use an Allen key to fasten the bolts ...
8
votes
7answers
49k views

Why does my drill bit destroy the screw head?

I have a craftsman drill which I use for drilling. When I use a screwdriver head to fix screws in drywall or wood, it keeps on destroying the head of the screw. So much so that the screw head is ...
8
votes
3answers
13k 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 ...
8
votes
3answers
10k views

Can I wall-mount a TV when there is an air gap between the drywall and the wooden stud?

I'm mounting a 38lb TV (with a ~10lb mounting bracket). I located a stud, but the drywall floats an inch above it, plus the drywall itself is another 1/2 inch. So a couple 3-inch screws (and not a ...
8
votes
1answer
1k views

What kind of bolt is this?

I'm trying to dismantle some wall boards, but I don't know how to remove the pictured bolt - close up attached. Its head has the dome shape of a carriage bolt, but there is a hole in the center, with ...
8
votes
3answers
83k views

How to determine the screw size (No.)?

I have multiple "Damaged Screw Remover" bits. I have another instance of the screw in my hand. The bits are designed for specific screw sizes (No. 4 to 7/No. 8 to 10). How do I determine the "No." ...
7
votes
4answers
6k views

Why should I use advanced nails instead of wood screws for strength?

Recently I found that there're some superior nails for constructing hurricane-resistant houses - with very clever design for preventing pulling the nails out and tearing the boards off when the ...
7
votes
2answers
3k views

How can I keep a screw from slipping off a screw bit?

I'm used to having magnetic bit holders, which will attract the screw, but sometimes the screw will still slip away sideways while screwing it in. Today I watched an episode of Adam Savage's One Day ...
7
votes
4answers
5k views

How to choose the correct bit for a screwdriver

I'm constantly using a screw driver for small electronics and around the house, but I find that multiple bits seem to work. Of course, something bigger or something small requires diferrent amounts of ...
7
votes
3answers
13k views

What kind of screws for attaching an Ikea style coat hook of an internal door?

I have this Ikea coat hook, that I'd like to mount to a door. But I would like it to be rather sturdy to handle some bigger winter coats. What kind of screws are recommended for (what I think is a ...
7
votes
2answers
30k views

What is the weight capacity of your typical 2 1/2“ drywall screw when driven 1 1/2” into a stud?

Update 11/3/2012: In spite of being informed by multiple sources (here on SE, a guy at the Genie Clip Canada office, someone at the SE physics site, and even my own personal test) that I should be ...
7
votes
1answer
9k views

Is it safe to use screws in subfloor-to-joist connection to eliminate floor squeak

Getting ready to have some hardwood (12mm laminate, technically) installed in our dining room, and in preparation for this, I bought some 1.25" stainless steel screws that I'll be putting down through ...
7
votes
3answers
24k views

How do I repair screw holes in a brick wall?

I have screw holes which were put in to support a curtain rail. The curtain's been pulled out a few times by accident, and now the screw holes are crumbling and I don't know how to repair that portion ...
6
votes
5answers
6k views

Brass screws stripping and snapping, what am I doing wrong?

I am hanging a new door and was told to use brass screws to attach the hinges. When I drive the screw with a mechanical driver, the brass screws sometimes snap (head snaps off the shank), or strip. ...
6
votes
4answers
16k views

Can I use drywall screws to stop floor squeaks?

I've got an old squeaky hardwood floor with access to from below. I can feel the hardwood boards moving under my feet when they squeak so I just plan to drill up through the subfloor into the hardwood....
6
votes
4answers
893 views

How can I prevent a screw from slipping on a slippery veneer surface when I try to screw it in?

When using a screwdriver this can be difficult as the screw tends to slip. Once the screw passes the veneer it is easy to finish screwing in... I'm looking for an easy way to get the screw past the ...
6
votes
2answers
20k views

What type of screws should I use in framing an area for a drywall patch?

As is evident in my previous posts, I'm in the process of framing an interior wall for drywall patch repair. I'd like to know what types of screws to use for connecting new 2x4's. When I visited our ...
6
votes
2answers
3k views

How to remove rivets?

I have to remove these rivets (see pics). What tool can I use for that?
6
votes
3answers
2k views

remove sheared screw from electrical outlet box?

A previous owner of my house (I swear it was not me :) ) appears to have broken off a screw in the hole (red circle) that allows the bottom of the outlet to attach to the box, leaving only the top ...
6
votes
3answers
117k views

How do I remove these screws from an IKEA Micke table?

I have assembled a Table Micke for the 1st time ... but I have some screws I want to remove. or didn't fit well (shld have tighten all screws more), 110126, 103430, 110630 the look like below they ...
6
votes
1answer
5k views

What kind of screws in to pressure treated plywood?

I am making hurricane panels for my house using the technique described here. The plywood I purchased is pressure treated. The sliding bolts are zinc, so I assume the screws that came with them are ...