Questions tagged [bolts]

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4 votes
2 answers
3k 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 ...
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  • 145
1 vote
1 answer
233 views

How can I remove the bolts holding down my utility sink?

I have a utility sink that is sitting on 4 legs, the front two bolted to my cement floor and I want to remove it. I'm not sure what kind of bolts these are. From looking at different kinds of bolts ...
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2 votes
2 answers
6k views

How can I attach a Pergola/lean-to to a pebble dash wall?

I am planning to install a Pergola/Lean-to to the back of my house, to use as a sheltered patio. I have been watching numerous videos and have picked up some fabulous information, however, I'm a ...
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  • 21
2 votes
1 answer
1k views

What type of bolt has a shoulder portion above and unthreaded region below threads?

I have a couple Rex folding lounge chairs: However, during my move one of the bolts connecting the base to the side came loose and was lost. I took out the one from the other side and I've never seen ...
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  • 301
1 vote
1 answer
6k views

How can I attach the frame of a bed to legs using carriage bolts? [closed]

I have a bed that I have been building - it has 4x4's for the legs, and I want to attach the frame of the bed (the part of the bed that runs from front legs to back legs, structural support) to the ...
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3 votes
2 answers
4k views

How can I secure a wall-mount server rack?

I would like to install a 2-Post 12U wall-mounted server rack in my utility closet. The rack will hold up to 200lbs. However, my equipment will be just under 180lbs. Most of the weight will be at the ...
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4 votes
5 answers
29k views

What is the meaning of the letters on the top of a common hex bolt?

I recently drilled and tapped a 5/16"-18 in a piece of soft steel, then found that the 5/16"-18 bolt I had chosen wouldn't fit (the bolt was slightly too large). When I found that other 5/16"-18 ...
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2 votes
1 answer
2k views

Is there a standard hole diameter for corner braces?

I'm planning a project that requires corner braces, and I want to figure out what size bolts I can put through them. Unfortunately, at least on the Home Depot website, the corner brace product ...
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2 votes
1 answer
350 views

Are all toilet bolts installed from under the floor?

My mom has an older toilet. When is became loose, in order to tighten the bolts she had to hire someone to go under the house. We just got a new toilet. I was hoping to install it as a d.i.y project....
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0 votes
0 answers
419 views

How I can remove this Ingersoll window bolt?

I have a small window with security bolts which have become rusted and unusable. However, I can't see how to remove them without forcing them off and damaging the wood. Anyone seen these types before ...
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0 votes
0 answers
33 views

How to correct the inclination of an old chair

I have an old easy chair, which I'm thinking to polish and use it. The chair is made of teakwood and has nut and bolts at the joints. As it is decades old and was unused for a long time, the holes at ...
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6 votes
2 answers
29k views

Which way should an internal star lock washer go?

I want to attach a rear basket to my bicycle and I don't know a thing about nuts/bolts. I got a plastic bag full of nuts, bolts, washers, and what I believe (according to what I could find on the ...
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0 votes
3 answers
3k views

removing old bolts from brick wall

I've got a rusty old downpipe on my external brick wall that needs replacing, however the bolts on the brackets don't seem to have useful heads. See photo: https://docs.google.com/file/d/...
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  • 177
3 votes
2 answers
3k views

What tool should I use to remove a screw from cramped spaces?

I don't tackle many DIY projects. But when I do, the most frustrating thing is knowing that I'm doing things inefficiently. I watch a YouTube video where the guy says it should take 5 minutes to ...
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1 vote
3 answers
23k views

What type of bolt should I use to maintain a movable joint?

I'm making a collapsible frame for a moses basket. The design is something like a deckchair, where two lengths of timber cross each other and are fastened with a bolt but can still move in relation to ...
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  • 11
4 votes
2 answers
2k views

Is it better to use two nuts, rather than a single long nut on the bolt?

Working on the roof, several J-bolts appeared to have been fastened with more than a single nut. Without exception each such bolt was almost flush to the cement sheet. I saw this done on a car wheel ...
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  • 311
2 votes
7 answers
23k views

How do I tighten/loosen this recessed nut and bolt?

My bed has a nut and bolt that are recessed into a piece of wood. The only tool I have that fits it is the tiny toy spanner that came with the bed. The spanner does not grip the nut tightly enough ...
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1 vote
6 answers
3k views

How do I remove plastic shelving molly clips?

I have some closet shelving clips I need to remove to paint a wall. The problem is that they are molly bolts. These are the exact clips/mollys. The question is similar to this one, but in my case, I ...
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  • 587
4 votes
4 answers
19k views

Can I use bolts to attach a bed to the walls of my room?

I plan on mounting my bed to the walls of my room. You can say that it will look like a loft bed without the legs. To make it look like it really is floating, I won't be using angle brackets. Instead, ...
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  • 189
1 vote
2 answers
198 views

Is there a term for this bolt attachment mechanism?

We're installing Ikea cabinets in our kitchen. The wall cabinets attach to a rail using a bolt-and-bolt-attachment-thingy that slides onto the rail, and the cabinets are then fastened to the bolts. ...
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  • 384
6 votes
5 answers
42k views

What type of lag bolts should I use for a deck?

I am looking at galvanized lag bolts (for the ledger) and carriage bolts (for attaching the beam to the post) for a deck. I can't find "hot-dipped galvanized" bolts/lag screws only galvanized. Is ...
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  • 879
7 votes
3 answers
7k views

How can I tell the handedness of a bolt?

I have a craftsman lawnmower (with a Honda engine) and I'm trying to remove the lawnmower blade to sharpen it. It seems really tight. I'm wondering if I'm turning the bolt the wrong direction. Does ...
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  • 173
2 votes
1 answer
3k views

Attaching sill plate to concrete, how do I attach framed wall to sill plate?

I am building a 12x12 shed on a concrete slab. I am going to bury j-bolts in the wet concrete so that I can attach the treated sill plate to it. The problem I'm running into is that the nut will be ...
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2 votes
0 answers
142 views

Need help identifying 75mm threaded sash window bolt

I recently moved into a new flat with period wooden sash windows. Obviously they are not the most secure and any additional security we can add would be great. One of the sets of windows had 1 of ...
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  • 123
2 votes
4 answers
1k views

How can I hold a nut underneath a deck with no clearance while screwing a bolt into it?

I have an existing deck with composite wood planks. My kids bought me a gazebo for my grill that I would like to bolt to the deck. Is there a tool I can use to hold the nut and washer in place under ...
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  • 21
2 votes
2 answers
14k views

How can I securely fasten a carriage bolt?

I recently made a bracket for mounting a TV onto a custom pipe mount that I built. I was advised at my local hardware store to use a carriage bolt here for the following reasons: These counter-...
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  • 1,101
4 votes
3 answers
11k views

Are these toilet bolts installed properly?

I had my bathroom renovated and had a new toilet installed. I noticed the white caps on the toilet screws were not secure---- looked like the contractor tried to secure them with some sort of caulking....
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  • 405
91 votes
8 answers
577k views

Should a washer go on nut side, or the bolt side?

Often I take something apart and when I go to reassemble it, I don't remember which side the washer was on. When there's only one washer, does it generally go on the nut side (pressed up against the ...
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  • 1,135
2 votes
1 answer
2k views

How do I safely install a pole/mast on our roof?

We are installing a pole/mast for wireless communication equipment on the roof of our commercial building. The pole will need to rise 2m above the roofline. Obviously we want the pole to be as ...
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  • 307
16 votes
6 answers
31k views

What is this kind of security bolt head called, and how can I remove it?

A previous owner fitted the light fitting pictured above, and has not left me a tool to remove the bolt. The bulb has blown so I need to get in to the unit. The head diameter is about 12mm and the gap ...
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25 votes
1 answer
3k views

What is this bolt in my basement floor?

In my concrete basement floor, there is a rather large bolt and washer. The washer is about 4 inches in diameter, and the bolt has a 1 inch head. What is it? All I can think of is that it's some ...
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7 votes
16 answers
70k views

What can I use as a thread "tightener" compound for a free-running bolt?

(I'm familiar with thread "locking" compounds, purple, blue, and red, but that's not what I'm looking for here. They lock once and then upon breaking the joint, do nothing further.) I'm looking for ...
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  • 215
8 votes
4 answers
30k views

How to remove rusted tank bolts

We have a really old toilet in one of our bathrooms which has started to leak around the tank bolts. I was going to replace the bolts and washers but the nuts are completely seized and rusted to the ...
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3 votes
1 answer
4k views

Should I put some glue in the pre drilled hole before installing an eye screw?

Going to put in some eye screws under the deck for a swing. Should I add some glue in the predrill for extra durability? I've also read vaseline is good for easier installation, but that's ...
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  • 183
1 vote
6 answers
15k views

How can I use toggle bolts with limited depth behind them?

I have a predicament, I am putting up a shelf into the wall. The wall is plaster, and then hollow and then concrete. I have screws with toggle bolts on them. The 2 inch screw with the toggle bolt ...
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  • 11
2 votes
1 answer
582 views

Why might a weld be weaker than a bolt? [closed]

I've heard that bolts should be used for connections that must be secure, rather than welds. To me this seems odd; I was under the impression that the whole idea of a weld was to make the two pieces ...
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19 votes
5 answers
16k views

How do I optimally cut a bolt to length?

Once in a while I need a bolt of exactly the right length and it is not one of the lengths available in stores. So I get a longer bolt and cut it to length. Here's the procedure I follow. I screw one ...
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  • 9,357
4 votes
2 answers
2k views

Are there different thickness heads/nuts for hex bolts?

The hex bolts in my local home depot (specifically the size 3/8-16) all have the same thickness of the hex head. It looks to me to be about 3/16 of an inch thick. I need to recess a hex screw inside ...
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17 votes
8 answers
90k views

When bolting down a porcelain toilet, how tight is "too tight"?

Tightening bolts on the base of a toilet is the one thing about toilet installation that has me the most nervous. They say not to over-tighten, but how tight is too tight before the porcelain is ...
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6 votes
4 answers
49k views

How strong are bolts compared to welding and what qualities to look for in foundations?

I'm planning on building a home climbing wall, made from a mild steel subframe. It will probably be around 10 feet tall approx. I was thinking along the lines of using mild steel angle, cutting to ...
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  • 163
2 votes
3 answers
2k views

Washer / spacer for round surface

I would like to bolt a bracket to a steel pipe (1.5 inch diameter), with the nut located inside the pipe. Since the application needs to support a considerable amount of weight, I need some kind of ...
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  • 543
3 votes
5 answers
19k views

How do I attach a ledger board if I have no interior access?

I would like to build a small, 24" high deck, for a new entry door to the house. I have the deck plans all laid out, and am in need of a 2x10 ledger board under the door to attach the deck to. Most ...
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