Questions tagged [bolts]

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2 votes
3 answers
499 views

Can anyone identify this screw from a Dell computer? [closed]

It's from a Dell computer so not exactly home improvement but hopefully not too far off topic. I would guess it's metric, being tech, so I assumed it was an M1.4 given the shaft is about 1.4mm across. ...
0 votes
1 answer
51 views

Can’t loosen Allen bolt from home patient lift

Hello I am trying to disassemble a hoyer lift to make space in my garage. I am already struggling though on the first bolt. It is an Allen bolt and I have a perfect Allen wrench for it. I removed the ...
2 votes
1 answer
101 views

Lag bolt pilot hole diameter for softwood - unthreaded shaft splitting wood

I'm planning to screw some 3/4 inch lag bolts through a couple of 4x6 PT southern pine beams and looking up pilot hole diameters for softwood it seems like either 3/8" or 13/32" is ...
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0 votes
2 answers
86 views

How do I bring the nut closer to the washer?

Following my last question (thanks @crip659 !), I was able to put the nut back on. However, now it is stuck at this kind of middle level where the threads stop. When I removed the whole thing from the ...
  • 105
0 votes
4 answers
94 views

How to install molly bolts in a hollow core door

I need to screw some hooks into a hollow core door, so I'm trying to use molly bolts and I'm having some problems with them. When I insert them into the hole, I tried using a hammer to lightly tap ...
0 votes
5 answers
162 views

Can you get nuts that attach to regular screws?

I have a screw attaching a plastic mould to a metal pole like so: Obviously, the screw's thread size is not the same as a standard bolt thread size so a regular nut can't be attached to the end of ...
  • 175
0 votes
0 answers
34 views

Rawlbolt anchor bolt too much torque required?

I’m using Rawlbolt anchor bolts to secure a bracket to clay brick. Drilled holes 14mm diameter, 50mm deep, removed dust & inserted shield. Hammered shield flush then inserted bolt, tightened to ...
0 votes
1 answer
38 views

Is there a weather-safe way to fill holes in cedar to enable re-attaching screws?

I have a fence and gate made out of cedar. The gate was attached to a post with 2 large hinges, using 2" lag bolts for each hinge. The top hinge had both bolts pull out of the post over several ...
1 vote
2 answers
162 views

How to replace bolts in an office chair?

I bought an office chair a while ago that recently had a couple of bolts break off on the bottom of the chair. I'm not sure what the name of the types of bolts are but I need to find replacements for ...
0 votes
2 answers
166 views

Name this bolt type for me - double-ended furniture connector with shoulder

I recently purchased some 2nd hand outdoor furniture. It is missing a couple of connecting bolts, like the one pictured below, and I want to purchase replacements. The bolt is used to connect two ...
1 vote
2 answers
82 views

What is the name of this hardware connector?

I am looking for the name of the part below. It is a metal connector that has a vertical threaded shaft into which a bolt can be screwed. The base has holes around the shaft that allows the part to be ...
0 votes
2 answers
49 views

Snapped check valve mounting bracket on condensate pump

I got overzealous when I put a new plastic check valve on my condensate pump. I tightened it too much and the check valve snapped off from the threads. Is there any way to take out what's left from ...
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 ...
0 votes
2 answers
114 views

Bolt keeps coming loose

I have an heavy duty office chair for my work-from-home (I am very obese). About every month, one of the bolts falls out of the arm. You can reattach it with a hex-head allen key, although it takes a ...
  • 3
7 votes
6 answers
3k views

Does the outer diameter of 4.78 indicate an M4 or an M5 bolt?

I measured the maximal diameter of this counter-sunk bolt. And tried to match it with the metric bolt dimension chart: But I did not find any match. I find the difference between dimensions M,N and ...
1 vote
3 answers
112 views

Pivoting with nuts, bolts, washers - is it possible?

Consider two stacked plates connected by some bolt, and the plates are supposed to be able to move independently. Usually in such cases they are connected by rivets, and cannot be disassembled easily. ...
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14 votes
2 answers
2k views

How do I prevent the bolts in my snow blower rotor from breaking?

We got about 12" of snow today and my snow blower lasted only 30 minutes before shearing off one of the 1/4" bolts that holds the rotary blade in place. This is the second time this has ...
  • 243
0 votes
0 answers
49 views

Helicoil, epoxy or some other method to repair threads for swimming pool pump?

Jandy swimming pool pump's plastic backplate comes with what appears to be two metal threads to attach diffuser. In my case threads rusted and diffuser came loose. Instead of buying a new backplate I ...
3 votes
3 answers
771 views

Do carriage bolts hold their position in soft wood?

I have a question about carriage bolts, and when they are appropriate to use, instead of more traditional hex head bolts. If I understand correctly, their main advantage is that they can be tightened ...
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0 votes
0 answers
53 views

What size nut for a B7 1-1/8" threaded rod?

I have a threaded Rod B7 Alloy Steel 1-1/8-7. What size nut will fit this? I got some nuts size being 1-1/8"-7 but they don't fit.
5 votes
6 answers
199 views

Elegant way to jack two materials apart, applying spreading pressure to pin them in place?

I have a tall cabinet acting as a room divider. Since it's not against a wall, it could fall. Screwing into the floor or the wall is not feasible, but the top of the cabinet is 5 inches from a ...
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3 votes
4 answers
964 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 ...
  • 177
0 votes
2 answers
129 views

Metric bolt specification

I am working on a project that requires: 3pcs M5x30-50 bolts and nuts I assume the M5-30 is the size and length. What is the 50 specify?
1 vote
3 answers
321 views

How can I mount a winch to a steel pole?

In order to raise -- and tighten -- a volleyball net every evening, we've attached a winch to one of the poles. The attachment is by two bolts going into the existing threaded holes in the pole. It ...
2 votes
6 answers
465 views

How do I remove this wall anchor stuck in concrete wall?

Bought a TV recently. Tried to mount it onto our concrete block wall. Drilled. Hammered the M8 wall anchor bolt (with the nut on) too hard and it morphed the bolt. Struggled to unscrew the nut, ended ...
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0 votes
1 answer
100 views

Broken 5/16 x 2 1/2 lag screw in beam

I was trying to hang a weight storage unit in my garage and the lag screw snapped, leaving 1/8 of an inch of the screw exposed from the wall. I'm not sure if I should use an extractor tool or another ...
  • 11
0 votes
0 answers
125 views

Stringer - Running 2x4s on top of the dry wall connected to the wall studs behind

I need to mount two vertical strips (blue color in the picture below ) which will hold shelves that can support roughly 400lbs of weight in total. I want to mount this in the center position of the ...
  • 101
0 votes
2 answers
111 views

Picnic bench unstable

My old picnic is unstable, especially when people are sitting on it. I think it moves because the holes that the carriage bolts go through have expanded so there is some wiggle room for the bolts (...
  • 245
3 votes
7 answers
2k views

Connect 3/8-16 bolts at 90 degrees

I'm finding that I am needing to connect two standard 3/8-16 (coarse) bolts at a 90 degree angle for mounting, like an elbow fitting would do. I need to be able to thread them in individually, because ...
1 vote
4 answers
265 views

Is a spade bit the right tool for burying a 3/8″ bolt in plywood?

Suddenly the two hardware stores near me have all sorts of varieties of spade bit sets from multiple manufacturers displayed in prominent aisles, which makes me wonder whether that's the reason I am ...
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0 votes
1 answer
163 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 ...
  • 497
2 votes
2 answers
397 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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23 votes
6 answers
4k views

What is the right tool for old, rusty, flat cross head bolts?

I'm trying to restore an old park bench, and I am struggling to unscrew the bolts. The heads have this wide (~12-14 mm) "flat cross" pattern that I have never seen before (see photo), and I ...
0 votes
2 answers
204 views

mantel mount with only 2 studs available

I bought a new home where the TV was mounted directly above the fireplace. The gap between the TV and fireplace was a scant 3 inches. I've since raised the TV to the specs provided by the fireplace ...
  • 1
17 votes
13 answers
5k views

How can I get a bolt with no head out of my wall?

I tried to screw this bolt into a stud to secure a 2x4. The hex head snapped off, and now the bolt is stuck. I managed to slide off the 2x4, but I have no idea how to extract the bolt. IIRC it's a 6&...
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1 vote
3 answers
633 views

How much weight is safe to hang from a 1/2 inch thick maple board mounted to the wall?

I have a wall mounted metal barbell holder that holds up to three barbells. The holder has pre-drilled holes 10 inches apart (two on each end). To mount this to a wall, I will have to attach a ...
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3 votes
2 answers
430 views

Rust free concrete fasteners

I need to fasten a 3/4 inch PVC trim board to a poured concrete basement wall. Since this will be on the exterior of the house I want to avoid rusting of the fastener. The previous pressure treated ...
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6 votes
3 answers
634 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 ...
0 votes
2 answers
967 views

What glue & screw/bolt/nut to use to fix the bathtub drain overflow?

I was cleaning the bath tub and I had unscrew a cap from the side of bath tub (where the hole is located) below: The cap consists of 2 parts:Part A & B as below When I removed part B, there was ...
  • 243
0 votes
1 answer
1k views

Trying to find correct bolt for ceiling fan electrical box

I'm really struggling trying to find the correct bolt for this electrical box for a ceiling fan. After taking the old ceiling fan out, I found 2 mismatched bolts that the previous person had used. One ...
1 vote
1 answer
113 views

What type of screw/bolt has expandable wings behind the wall surface?

Do you know what type of screw and bolt this is? Do you know the best way to unscrew it? It attaches my CCTV camera to the ceiling plaster (dry wall).
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1 vote
2 answers
394 views

Which side are these washers supposed to go?

I’m trying to assemble this trolly and the instructions are blatantly useless. Attempting to check it from the box picture, I was convinced that the washer goes on the nut side, but as I tried fitting ...
  • 163
0 votes
2 answers
82 views

Drip leak from a 2 yr old toilet / bolt

I had my toilet replaced about 2 yrs back with a Kohler 4467. It seems to have developed a drip leak from where it is bolted - a drop or 2 every 30min. I had the plumber who installed it come and look ...
5 votes
2 answers
645 views

What type of bolt is only threaded at the tip

I am trying to fix my son's scooter and need a 2nd one of these: I've never seen this style of bolt/screw before: only the first 1/4" or so is actually threaded and the rest is just an ...
2 votes
2 answers
1k views

Allen key bolts vs Phillips head make a difference?

I received a metal bed frame without the bolts. The directions have the sizes used in hardware list. I went to hardware store but they didn’t have M6 bolts with hex head as shown. The sales associate ...
1 vote
2 answers
2k views

Top Fixing Toilet Seat Bolt won’t unscrew [closed]

Any ideas for getting this guy on the left out? When I unscrew it I just hear a squeaking sound. Guessing that the nut has rusted onto the bolt and the whole plastic assembly is turning. Thanks
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8 votes
3 answers
703 views

Are electrical screws a standard diameter?

I've just had to reset the thermal cutout of my immersion heater. Whilst removing the cover, I've stupidly dropped the nut somewhere behind the tank. Fishing around with a magnet has pulled up all ...
1 vote
1 answer
119 views

How do I fix this poorly designed double-rod towel rack?

Original question: How do I name/ describe this bolt so that I can search for and purchase it? I have a troublesome towel rack that I’ve been fighting with, off and on, for several years. After much ...
1 vote
1 answer
238 views

Can I use a different type of bolt for awning?

I got a light plastic awning from amazon. It only has 3.4 pounds. The size are 30"x40". Now I want to install it over the front door. The package comes out a set of bolts(The size is marked ...
  • 113
0 votes
3 answers
122 views

unscrew a rounded nut

I tried to remove the supporting wheel of my son's bike the other day, it's quite easy to remove one but the other gave me quite a bit trouble - the nut is rounded thus can't be secured by a wrench. ...
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