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Questions tagged [screws]

Questions relating to threaded fasteners and their use.

1
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1answer
377 views

Hanging faux wood blinds- screw broken. Is there a tough screw I can use for a wall stud?

Job= I was trying to hang up some new faux wood 2" slat blinds. It's a double sized window, so I bought 2 blinds. I needed to install 4 brackets, with 2 in the center. I predrilled the holes as the ...
4
votes
2answers
2k views

What is type of screw is this?

This cylinder-like screw is screwed into an opening on the inside of a table. It basically "locks" into the screw that is facing down from the top. Kind of like this: I'm trying to get them out, yet ...
1
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2answers
117 views

Used the wrong screws for sheetrock and screw marks are too visible. Any suggestions?

I used wrong screws for the drywall. I didn't realize that the screws are wrong until the job was done and I started to put mud on the walls. After putting the first layer and doing some sanding, I ...
1
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2answers
250 views

How to deal with Square Drive vs. Robertson Screws?

Although the terms "square drive" and "Robertson" are often treated as the same in catalogs, the difference (as I understand it) is that Robertson tools and screws have a slight taper to the square ...
0
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1answer
386 views

Need help installing the pull up bar i just bought

i am a rookie that hasnt done much installing/drilling etc. in my life (just turned 18 ;P). So i bought this pull up bar online, assembled it, but now i have to install it to my wall. At first i ...
0
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1answer
35 views

Removable Bracket for Wood

I am hoping to bracket two pieces of wood together at in a removable fashion (parts of a table that can be disassembled). Through research I found hanger bolts which look close to what I would want, ...
0
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1answer
54 views

What is this machine screw? 3.7mm OD, ~32 TPI

I have a machine screw from the hardware on an old desk that needs to be replaced (the knob it goes with is slightly stripped so it needs a longer screw to catch when mounted), but it's a really weird ...
1
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2answers
54 views

How can I hang artwork on a rented home's walls?

Hi, I am new to this part of America. I need to hang few pictures and few other very heavy paintings. I am in rented single family home. How should I go about doing this?
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0answers
18 views

Rusted tapcons on an aluminum screen patio cage

What replacement screw is best to replace rusted tapcons on an aluminum screen patio cage?
2
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1answer
97 views

How do I get a cam lock out of a really deep hole?

I bought a 54" desk from a local Walmart, more specifically a BH&G cube organizer desk. While I was putting it together and following the instructions, I realized that the cam locks weren't ...
-2
votes
1answer
41k views

How many screws are there in a 5lb box of 3 inch screws?

About how many screws are in this 5lb box? Deck Mate #9 x 3 in. Tan Polymer-Plated Flat-Head Star Wood Screws (5 lb. Pack)
0
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1answer
51 views

Door Jamb Rotted Where Latch Goes

I just installed a lock in my door and when attempting to install the latch I found that the wood was splintering and not stable, so I cut it out. My problem is similar to this one. What can be ...
0
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1answer
22 views

Remove broken setscrew in an already damaged hole?

Trying to remove a broken setscrew on part of my stove. Top photo is the current state, the second photo is another part showing an intact screw for comparison. I already tried to drill out the screw ...
0
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3answers
39 views

Attach railing to aluminum post

I am putting in a handrail down the few steps into our garage. The floor is concrete, so I've ordered a couple of 3x3 aluminum posts. The railing has a single attachment point per post, and the ...
0
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1answer
46 views

When to use inox (stainless steel) screws in an anchor as opposed to using galvanized/normal screw?

Is it only when there is a possibility of humidity? Are inox screws better for withstanding some weights, are they tougher or just their water handling is better? I see there are different types of ...
5
votes
4answers
1k views

Plywood subfloor won't screw down in a trailer home

I'm remodeling my mom's bathroom and I'm putting 1/4 inch plywood down on top of the floor to get a smooth surface. The existing floor is strong but there was some deflection in it and it's not as ...
6
votes
2answers
12k views

How do I use precision screwdrivers?

I am talking about those small and narrow screwdrivers with a thin handle. I can't get a tight enough grip on the handle to generate enough torque to remove a small screw. Do I have to use something ...
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 ...
3
votes
2answers
130 views

Nylon switch cover plate screws

Every time someone touches any of my light switches they get a static shock. I know the root cause is the humidity is too low, but until I fix that, I heard that nylon cover plate screws (vs the usual ...
1
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3answers
68 views

What imperial machine screw has a diameter of 4.5mm and a thread pitch of ~1mm?

I lost one of the screws of my grandpa's rocking chair. I live in Germany and cannot figure out which kind of nefarious imperial screw this is. According to my measurements, the diameter is exactly 4....
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 ...
0
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2answers
90 views

What type of unbrako screw is this?

I need some spare screws like the one in the picture, but I have no idea what it’s called. Any help is greatly appreciated!
1
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0answers
28 views

Is there a torque table for hex cap screws?

I find that especially with smaller hex cap screws the hex drive is worn out or deformed long before I reach the maximum torque that the screw could theoretically handle. For example: I've used M5 ISO ...
0
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1answer
58 views

Do screwdrivers come in standard sizes?

I'm looking at getting a set of small Phillips head screw drivers for disassembling electronics, and I was wondering how the size of screwdrivers are measured? I know screws come in standard sizes (M1,...
5
votes
5answers
58k views

How to put the washers on the screw

So, I got a screw and things that look like rings (washers). One of them looks like incomplete ring (C-shaped), another is really a complete bigger ring. The assembly instruction says I need to put ...
0
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1answer
63 views

Lag bolts vs wood screws for reinforcing garage door header

I am about to install the garage door header bracket and I have almost everything figured out. There is a ~1 inch gap between the ceiling and joist I'm screwing into but I need every millimeter I can ...
0
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3answers
209 views

Screw Sizes for Electrical Connection box lids

Am having to install covers to several different types of electrical connections boxes in my house. Some are round, blue ones and some are a grayish tan with corners rounded. None of them have cover ...
0
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2answers
34 views

Solving subfloor squeaks

I am planning to remove carpet in a living room and dining room area of my house and replace it with floating laminate flooring. There are some spots in my current floor that squeak so I was planning ...
1
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1answer
61 views

Screws breaking through drywall paper

One of the several scenarios in which a screw doesn't form a nice and tight seal on drywall paper just below the surface is if a joist/stud is not in the same level as the adjacent two and there is a ...
0
votes
2answers
93 views

Would a M6 bolt fit in a 6mm hole?

I'm trying to look for some Allen screws for a friend to help him out, but am unable to figure out the correct size of the screws and nuts he lost (see image, marked in red).. I'm not really familiar ...
1
vote
4answers
109 views

Installing pull-up bars. Will this design hold?

I am installing a series of pull-up bars all the way down my hallway, kind of like really spaced out monkey bars, and would like some advice on my proposed design, b/c I have zero experience with ...
0
votes
1answer
51 views

I’m trying to replace my doorknobs

Help! I am trying to replace my lock with a new lock that I bought at bunnings and I’m here with my screwdriver but look at this what kind of screwdriver do I need for this! What is this. I’m very ...
1
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2answers
68 views

Broken screw head door hinge

My door is missing the strike plate and its keep opening up when there is a slight draft. So if I align the door it goes into the strike plate without any issues. I believe its a loose screw. So, I ...
5
votes
7answers
24k views

Do I run screws through the “tops” or through the “bottoms” of the corrugated steel in roofing?

Suppose I want to cover a roof with corrugated steel sheets. Imagine a sheet laying on the roof. It will have "tops" - zones that are further from the roof surface and "bottoms" - zones that are ...
0
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1answer
29 views

Using chipboard screws and plugs in a dot & dab wall

I have a dot & dab wall and am installing a radiator onto it. I had a rummage around and found a "chipboard screws and plug" set. Using the included wall plugs, would these be suitable for ...
1
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1answer
25 views

Sizing for a flush countersunk screw

I'm fitting some old keyhole covers. I need two screws for each. The hole in the cover is about 3 mm and 4 mm at the top of the opening. I tried buying some 3×12 mm screws but the head is too wide. I ...
1
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1answer
47 views

Dealing with squeaking screws in chipboard flooring?

I've had a problem with squeaking floor since moving in, and after pulling up the carpet and taking a look I've discovered it's down to the screws which have been put into the chip board flooring ...
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 ...
4
votes
2answers
956 views

How do I better secure a loose lag shield in concrete?

I have a concrete hole that was drilled a little bit bigger and the lag shield anchor is a bit loose. How do you tighten it? Insert paper or wood?
1
vote
1answer
56 views

What is this type of fixing? (similar to cam/dowel)

I know this is similar to cam or dowel type fixings, and I have searched extensively for this part, but does anyone know exactly what type this is? Specifically the silver section, as I have enough of ...
0
votes
0answers
36 views

How many sizes larger do I need to go to fix a cross threaded screw?

Generally, how much bigger should a new screw be so that it doesn't interfere with the crossed threads that have already been made but sits as if it had been tapped freshly? People generally seem to ...
5
votes
7answers
13k 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 in the ...
0
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1answer
42 views

Can 3/8" Titen Heavy Duty Screw Anchor or hole be reused?

So we drilled into concrete to bolt down steel bases with several Titen 3/8" x 3" Titen heavy duty Screw Anchor. I'll be replacing the base, so I will need to remove the screw, remove the base, and ...
0
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0answers
55 views

What is this part called?

I'm not sure this is the right place to be asking this but I'll give it a try. I have this bit of hardware from a pair of helping hands that I'd like to find more of. I'd describe it as a rod fastener ...
6
votes
3answers
255 views

What is this small triangle on this screw head?

This doesn't really relate to a problem I have (the screws work just fine), it's more of a curiosity question. Some of the screws I've used recently have a small triangle on their head, as if for ...
0
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1answer
317 views

Light Fixture Screws & Bracket Too Small for Fixture Box

I have a light fixture that came with a mounting bracket and some screws. When I went to screw the bracket into the ceiling fixture box, it looks like the box's holes are too big. Not only do the ...
0
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0answers
152 views

Deck screw vs construction screw strength

I had sort of a follow up question that wasn't addressed here: Difference wood and deck screws Generally, does an exterior grade deck screw have the same strength as a construction screw?
0
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1answer
43 views

How far can you safely drill into 100mm thick brick for expansion plugs

I'm mounting a rafter support for a lean-to at the side of my house (45mm x 120mm wood beam). I know that the bricks are 100mm thick, so I'm wondering what length of expansion plugs (rawl plugs) I can ...
1
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1answer
29k views

Installing a ceiling light with screw holes that don't match the ceiling bracket

I want to install an IKEA Calypso ceiling light. The screw holes in my ceiling measure 7 cm across. The screw holes on the light differ - they measure 9 cm across. How would I screw in the light if ...
3
votes
5answers
7k views

How to remove a screw inserted from the wrong side in an IKEA ALEX drawer unit?

We just bought an IKEA Alex 9 drawer unit. I assembled most of it without difficulty, except for step step 25 from the assembly instructions. I wasn't paying enough attention, and screwed the screw in ...