Questions tagged [screws]

Questions relating to threaded fasteners and their use.

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Will Stainless Steel Screws with Galvanized Hinges Cause Corrosion? (Exterior Application, Near Ocean)

I have a set of galvanized hinges for a shed door. The shed is located 50 feet from the ocean. Very salty air. The hinges didn't come with screws and I'm having a hard time finding suitable galvanized ...
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  • 537
3 votes
2 answers
1k views

Remounting a pullup bar that is slightly off level

I mounted a Rogue P4 Pull up bar system on my wall. I used 6 x 1/2" x 4.5" inch lag screws to fix each post to the wall. I did my best to make each post leveled. However, in the end, one of ...
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3 votes
1 answer
174 views

How to dismantle a shower frame with screws close to the wall, facing the wall?

I need to remove a shower frame. It seems that I first need to remove the top horizontal bar. It is, however, screwed from the inside of vertical frames. How can I unscrew them and then screw back? ...
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1 vote
1 answer
52 views

are 1 1/4" screws enough to hang 3/4" plywood?

I have 3/4" furring strips over concrete wall. I'm putting 3/4" plywood atop the furring strips. This is inside, covering a basement wall. Will 1 1/4" screws be long enough to attach ...
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6 votes
3 answers
1k views

Is there any significance to a red machine screw? [closed]

While cleaning the garage I found this red colored machine screw. I know that green screws signify a ground connection but I've never heard specifics about red screws. Is this for any specific common ...
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  • 8,593
0 votes
1 answer
98 views

How can I find flathead screws with the correct head diameter?

I have a door that uses these screws to hold the handles on. At some point in the past, some of the screws fell out and were replaced with screws that have slightly smaller heads, which means the ...
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  • 2,414
0 votes
3 answers
61 views

How to remove round screw from shower handle

I've tried all kinds of (16) Hex Keys SAE: 1/16", 5/64", 3/32", 1/8", 5/32", 3/16", 7/32", 1/4" Metric: 1.5, 2, 2.5, 3, 4, 5, 5.5, 6MM but nothing fits these ...
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0 votes
1 answer
41 views

How to fix cracked wood [closed]

I was putting together a desk which has a wooden surface and metal legs. The wood around the screws joining the wood with the metal leg chipped. How should i fix it?
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1 vote
1 answer
66 views

What kind of screw do I need here to hold a cabinet hinge?

What kind of screw is supposed to be used to mount this cabinet door hinge? You can see the screw holes circled in red. They look smoothly bored out, so not sure how the screws are held in place. ...
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  • 253
-1 votes
2 answers
75 views

How can I protect rusting Tapcons in a seashore installation?

We installed some glass railings using Tapcon screws. Few months after installation screws started to rust. The house is located on a seashore, and in windy weather, saltwater spray can reach it. ...
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3 votes
1 answer
158 views

Help to identify the screw standard

I have a screw that is used to fasten electrical-panel door. Now the wall got thicker and I need longer screw to fasten the door. I measured the size of the screw and tried to order same diameter ...
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2 votes
2 answers
127 views

Tapcon weight holding capability

I have little experience with concrete screws and don't know their weight-bearing capacity. Would four (4) 5/16"-diameter ("heavy duty") tapcon anchors, each 3" in length, screwed ...
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  • 434
0 votes
2 answers
108 views

Shower Door Hinge Pulling Away From Wall?

The top hinge of our shower door is pulling away from the wall, which causes the door to sag and leave a little gap when it's open. I tried pushing the hinge back into place and tightening the screws, ...
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1 vote
2 answers
116 views

How to remove screws in threshold that have an attached washer on the under side?

I am trying to replace the stripped screws that hold my adjustable door saddle in place. They have a attached washer on the bottom of the saddle that doesn’t allow me to remove the screw. Any ...
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  • 11
1 vote
2 answers
188 views

How would I tighten a screwless kitchen shear?

I have a pair of J. A. Henckels kitchen shears that look exactly like this: The joints are covered with a blue cap on both sides. I sharpened them recently, but they still don't cut well, and I ...
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  • 63
0 votes
1 answer
48 views

Framing a Soffit with Construction Screws

I am building a soffit around my HVAC in the garage. I still have to remove the dry wall from the floor truss so I included a pic of an exposed area. The question is I do not have a framing nailer and ...
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  • 153
2 votes
1 answer
87 views

Are black/dark-gray-colored screws typically weaker?

I am no expert on screws. When I go buy some, I'm typically handed screws that have a silvery color. I have never asked about the metal composition. Still, occasionally I notice you can also get sets ...
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  • 2,365
0 votes
1 answer
58 views

Reinstall Window Blinds, Screw Holes

I purchased Inside-Mount Horizontal Faux Wood Blinds. We removed our blinds temporarily due to painting. When reinstalling, should we reuse the Same holes, use different drywall screw mounts, or get ...
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0 votes
0 answers
51 views

Need to affix an outdoor boiler to an external wall that has started to come away

I have a situation where an existing boiler that was fixed to an external weatherboard wall has started to come loose. The weatherboard had some dry-wall or something affixed first to which the ...
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  • 19
1 vote
2 answers
181 views

How do wire screw handles work?

I acquired a chest of drawers and one of the handles of the drawers came out and I was surprised to see that they were twisted wires. Looking on the other side there are screws. So neither the wires ...
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  • 1,607
0 votes
5 answers
152 views

Hanging coat hook with keyhole slot

I purchased some coat hooks about a year ago and have only just around to installing them (decorating takes time haha). They are hung with keyhole slots on the back of them: The problem I have is, I ...
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  • 101
0 votes
0 answers
178 views

Is it okay to screw self-tapping screws into a steel lintel of unknown thickness?

I want to install blinds into windows that have a metal lintel. The lintel appears to be a steel beam of unknown thickness. Can I just screw self-tapping screws in there? Should I drill a pilot hole ...
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0 votes
0 answers
38 views

Filling large hole to screw/drill into again

I have a radiator which was not on properly. I tries tightening the screws but the original plaster just gave way. I filled it with 2 products (polycell and ronseal) which both claimed they could take ...
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0 votes
1 answer
52 views

Screwing in to an HVAC vent

I'm trying to mount a sliding barn door in a room. It has five holes in the rail for the lag screws to screw in to. One of the five holes is directly over an HVAC vent that leads to the upper floor - ...
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0 votes
1 answer
159 views

Imperial to metric screw conversion

I am working on a DIY electronics project with the instructions posted online and they call for screws and nuts in imperial (US) format. Because I live in Europe, I need the screw and nut sizes in ...
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  • 111
3 votes
4 answers
960 views

Fixing sheet material together

I have two pieces of sheet material that I want to fix together, one is reinforced cardboard and the other is a flat piece of metal that's part of a clasp. I'm looking for a fixing that would function ...
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  • 177
0 votes
3 answers
236 views

What is the maximum torque I can apply to a screw?

It happened recently that I broke the head off two screws, once by using an electric drill and once by tightening the screw by hand. For example, it can happen that the pilot hole in the wood is too ...
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  • 194
1 vote
0 answers
125 views

3/4” Furring Strip Sufficient Holding Strength for French Cleat Wall?

I have 3/4” thick furring strips (1x2s) anchored to a concrete wall (very securely) that I am planning to put 1/2” plywood on for a French cleat wall. Will the 3/4” depth, using a 1.25” screw to ...
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0 votes
1 answer
122 views

Screw backing failure in Bosch dishwasher

Context: Bosch SHE3ARF2UC/22 provided this link to diagrams The plastic anchor, which holds the screw in place, seems to have broken: The screw hole is in the dishwasher door: Is there a simple ...
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  • 2,746
0 votes
0 answers
44 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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0 votes
2 answers
809 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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  • 101
2 votes
1 answer
70 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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0 votes
1 answer
73 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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0 votes
1 answer
115 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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  • 11
1 vote
1 answer
85 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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  • 2,823
0 votes
2 answers
82 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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  • 143
0 votes
1 answer
123 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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  • 465
2 votes
2 answers
199 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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  • 29
0 votes
1 answer
166 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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  • 41
0 votes
3 answers
176 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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  • 101
0 votes
2 answers
104 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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-2 votes
1 answer
50 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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  • 6,643
0 votes
2 answers
146 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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  • 598
0 votes
0 answers
74 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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  • 353
2 votes
1 answer
142 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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  • 243
0 votes
0 answers
55 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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  • 101
0 votes
1 answer
156 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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  • 661
1 vote
1 answer
54 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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0 votes
1 answer
74 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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  • 784
0 votes
1 answer
59 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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