Questions tagged [screws]

Questions relating to threaded fasteners and their use.

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38 views

Specialty screws for reinforcing wooden shelf supported by pins

This is a 6 foot tall MDF + Veneer shelf unit. Adjustable shelves with pin holes. Most are supported as shown. The shelf I am remounting uses screws in the pinhole and the dovetailed inserts in the ...
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2answers
78 views

Do I need an impact driver for driving concrete screws?

I'll shortly need to bolt some shelving and a power rack down into my garages concrete floor. I'm planning on using concrete screws so that I can remove them later if I want to move anything around. I'...
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1answer
52 views

what to do with metal box with no grounding screw?

I have an outlet in the age that appeared to be from 1960s. I decided to replace it with a GFCI receptacle after getting charging issues with EV. After opening the outlet up, it appears that the ...
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1answer
64 views

Type of drill that can make quick work of pre-drilling red-heads / concrete screws

I have a 17 pound hammer drill with a rotary attachment rated at 7.5Joules. That's plenty of impact energy but it is actually a bit soft on the rotary torque. It basically is meant to demolish ...
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1answer
89 views

Drilling out steel screws

What technique do I need to use for drilling out a steel screw? Might be stainless, not sure. I'm using a Milwaukee M18Fuel hand drill and Milwaukee cobalt bits. It's a powerful drill. I've made a ...
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1answer
36 views

Are 1-1/4" screws enough for cement board if I shim the studs with 1/2" shims?

Due to an offset between the plumbing and the shower drain I need to float the wall on the short side of the shower base with like 3/4-1/2" so I am using top to bottom shims. I am not sure if the ...
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2answers
60 views

Toughest self-tap screwable glue?

I have a self-tapping screw that has stripped through its plastic (I can't be more specific) housing. What's the toughest (as in resistant to stripping, it's not particularly load bearing) glue that I ...
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1answer
72 views

Which nut and bolt to attach wood to metal?

I need to attach a "plank of wood" to a metal bar, shown as the two bolts C in the figure below. This problem arises while designing a proper way for hanging a chin-up bar. Notice in ...
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2answers
98 views

Should I use lag screws or expansion bolts for an aerial mount point on a joist?

I would like to install a mount point on the ceiling for my wife so that she can continue doing aerial work. This is the mount point I want to install: Aerials USA Stainless Steel Mount Point As you ...
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1answer
101 views

Identify this Screw - Came with Google Nest Sensor

Is there a name for this type of screw? It came with a Google Nest Sensor, I was hoping to mount my router and modem to the wall with similar screws. Almost a barbell-like shape that hangs the sensors ...
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3answers
142 views

I need help identifying what type of screw head this is

Here is a picture of the screw that holds the caddy of my laptop's SSD in place. Can anyone tell me what type of screw that is? Is that a stripped Phillips head screw? Or is it something else? I ...
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2answers
70 views

Removing screws from concrete

My house's basement has wood shelves that are firmly attached to the basement's concrete walls. I need to remove these shelves (because of molding issues) but my drill is not strong enough to detach ...
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1answer
49 views

Wood screw dimensions not coming out right

According to various specifications on the internet, a #12 wood screw is supposed to have a head diameter of 0.438". However, when I measure #12 wood screws that I have, their head diameter is 0....
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2answers
87 views

How to fasten/glue plywood flooring to joists

I am in Indonesia, and have constructed a small mezzanine approximately 2.7m x 4.4m, 2.5m off the ground (roof is steeply vaulted, so there is still headroom). Construction is hardwood (bengkirai) ...
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0answers
69 views

Why do screw head sizes and lengths vary for a stated size?

I have two #8 screws, they should have the same diameter. They are supposed to be 1-1/4" long, but one is slightly longer. I don't care too much about it. However, the heads of the two screws, ...
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1answer
119 views

Total max weight hung on single stud

I'd like to hang a gas central heating vertical radiator on a single timber stud behind a thin plasterboard wall. The stud is 38mm wide (actual size) and (presumably, difficult to measure) around 75mm ...
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54 views

What materials or situations require plugs/anchors for screws?

Context : I have an Ikea's Gerton tabletop (solid beech, 3 cm thick) and two Ikea's Alex drawers blocks as feet (Ikea's Alex, panes are 1.6 cm thick). I'd like to fix heavy stuff on the opposite edge (...
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1answer
54 views

HardieBacker with Hydrodefense very difficult to drill

I'm attaching a substrate onto my new shower wall. I'm using HardieBacker with HydroDefense as the substrate (it's the red kind). I was very careful to read the instructions, and I bought the ...
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1answer
39 views

How to install security cameras on ceilings?

I would like to know how to install or mount a camera on the bottom face of this hollow black box above the shop door. The word "Alabsh" is written on the black box as shown in image. The ...
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1answer
38 views

What type of screws should I use to attach a sign to fiber cement siding?

My house has fiber cement siding and I want to attach a decorative sign to the siding. I'm told that I need a carbide tip drill bit to make a clean cut. But what type of screws should I use? And what ...
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1answer
38 views

Efficiently remove backer board screws

I am replacing kitchen tile with vinyl planks or engineered hardwood. After ripping out the backer board with tile, I am left with hundreds of screws, set every two inches in a rectangular grid. Is ...
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1answer
860 views

How to remove a Screw or bolt fastened with metal epoxy

I have done a mistake by adding metal epoxy to a machine screw. I added that because that screw did not fit. but later it was turned out that it is a wrong screw that I used. Now I cannot unscrew it. ...
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3answers
146 views

using deck screw instead of Yellow zinc construction screw?

Here in Canada I found the Deck Screws to be cheaper then the Yellow zinc construction screw. They are both Carbon Steel, and to my understanding, the coating on the deck screws are just more ...
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1answer
348 views

Toilet float adjustment screw is stuck - how can I fix this?

I was adjusting the water level in my toilet and I think I opened the float adjustment screw too far. It seems to have come disconnected from something. Now the float falls as far as it will go and ...
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3answers
357 views

Hanging a 45lbs mirror to drywall

What is the best way to hang a 45lbs mirror (Ikea Hovet) to the wall? I'm new to this and attempted to use a flip toggle but I had the wrong size screw. I've since figured out that I need a #8 screw ...
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1answer
44 views

Holding plywood between bars for shelves?

I have a small balcony that has wrought iron bars on either side. The width between the bars is about 5ft. I wanted to place several 1"x6" plywood pieces between the bars for some small ...
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0answers
41 views

Drawer slide catching can’t remove

The drawer slide won’t extend fully because it keeps getting caught. I think it is catching on a loose screw but I can’t access the screw to tighten it as the slide keeps getting caught! Does anyone ...
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2answers
178 views

Need help identifying "pre-stripped" Phillips screw

I am trying to remove some screws with some very annoying heads. The screws look like a regular Phillips head but have the center rounded out. This makes a normal Phillps head screwdriver slip as if ...
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2answers
49 views

What size is this hole?

I Have a tool for measuring the sizes of holes and screws but I don’t know what size is listed as 10 in the image below. Across from it the row in question is listed as INCH.
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3answers
65 views

Potential danger installing longer strike plate screws?

Just changed the locks on my house today, and I noticed that the strike plate screws that came with my new deadbolts are much longer than the existing strike plate screws. I'm using the old screws for ...
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2answers
103 views

How can remove a flat head screw that's in a hard to reach space?

I have an overhead light fixture and I need to remove the "cover" so I can change a bulb but the cover is held in place with metal brackets that have to be removed first and they are ...
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2answers
79 views

Cutting off the tips of roof sheathing cap and metal screws so they don't show?

I am replacing a flat carport roof with PBR metal sheets over 5/8" inch plywood sheathing with underlayment. I know 1/2 inch is strong enough, but I was thinking more of the nailing. Anyway... ...
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4answers
636 views

How can I remove these screws from a brick wall?

We replaced a fire escape ladder on our patio. The old ladder was fixed using screws which I don’t know how to remove. They are kind of loose, I can turn them left or right as much as I want but they ...
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7answers
2k 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 ...
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3answers
374 views

Using ceiling hook with no joist or anchor/toggle? Is it ok to do for string lights? What hook to use?

I've been trying to figure out whether or not it's safe to use regular hooks in the ceiling without a toggle or joist or other reinforcement for lightweight applications. I would imagine there would ...
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1answer
43 views

Sizing System for Screw Heads?

I am restoring an old lamp with a shade that attaches with sort of a hose clamp thing held on by a small machine screw. The screw was stuck so I ended up breaking the head off assuming it would be ...
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11answers
7k 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, ...
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1answer
125 views

"European" to US screw nomenclature mapping (and reverse)

My wife's company allowed moving her raising desk for working from home. Not sure how it happened, but we've lost the crews which fixate the table top to the metal frame it's standing on. I consulted ...
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2answers
182 views

What is this tiny screw?

I won't bore you with project details, but I need to replace a very tiny screw and I'm having a lot of trouble both determining the size and finding a supplier for screws this small. So far I have ...
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1answer
58 views

Install door handles on opposite sides of a pocket door

I am new to DIY and bought some custom door handles; I'd like to install them on both sides of a pocket door, but I'm not sure how. I asked the manufacturer for an installation guide, but they haven't ...
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5answers
6k 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 ...
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1answer
343 views

Apparently stripped holes in dryer door hinges

I removed the door of an OLD Maytag dryer(DG408) to repair the latching mechanism. I followed Youtube repair video (that was linked to the repair part on order site) step by step, worked like a charm....
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1answer
64 views

Door knob lock not moving when turned to lock

I have a bathroom doorknob that when I lock, nothing happens to the lock (by lock I mean the thing that moves and stops the door from moving I don't know if there is a technical term) I can pull the ...
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1answer
63 views

Electrical Outlet/Switch Cover Vanity Plate Screw Issues

I am taking the time to update all of my outlets and switches in my home since they are 14+ years old or older and most of them are the METALLIC and NOT NYLON and have the vanity/cover plate entirely ...
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2answers
121 views

What is this headless screw called?

I need this screw for assembling my BabyBay baby cot. In this manual, it is part number 1122.
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2answers
9k 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?
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1answer
173 views

Where do I install my hairpin legs on this 8 foot long butcher block for my new workstation desk?

So this is my first DYI wood project for my new workstation desk. I purchased this Baltic birch butcher block and finished it myself. Not bad for my first go! It's 8 feet wide, 25" deep and 1.75 (...
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0answers
71 views

How do I remove this type of screw/insert?

How do I remove this type of screw? These are on the corners of a bed frame we are trying disassemble
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0answers
104 views

What type of screw is this (3 slits)?

It has three slits around the edge and no groove in the middle.
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3answers
577 views

Best Practices for Measuring Screw/Bolt TPI?

It is extremely nice to be able to use a caliper to measure screw/bolt major diameter (and length) to find correct replacements. However I am struggling to come up with a good way to determine ...

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