The tag has no usage guidance.

learn more… | top users | synonyms

4
votes
1answer
284 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 ...
1
vote
2answers
6k 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 ...
0
votes
4answers
759 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 ...
1
vote
2answers
146 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. ...
6
votes
3answers
1k 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 ...
2
votes
1answer
977 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 ...
1
vote
0answers
88 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 ...
15
votes
5answers
8k 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 ...
2
votes
1answer
5k 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 ...
2
votes
1answer
701 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 ...
21
votes
1answer
1k 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 ...
3
votes
1answer
2k 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 ...
4
votes
2answers
911 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 ...
2
votes
1answer
318 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 ...
1
vote
1answer
632 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 ...