Measuring a Bolt?

[Azmodeus]

This is going to sound stupid, but how do I measure a bolt?

I ordered a pair from a peugeot garage to fix my exhaust cover on. The woman knew exactly what I wanted, and said she would send them off. I got them about 2 weeks later () and they are the wrong ones.

So I phone them up, and ask for the right ones. No problem, send them right over. Another fortnight, no word. Phone them again, and she says that she is looking at them right now, and they will be sent asap. Another fortnight, another phonecall, and I get "sorry sir, we never recieved the order".

So I am now trying to find the right size myself. They only need to be about 1mm "narrower" than the ones I have. Length doesn't matter because I can cut them down.

Suggestions?

[Frost]

take one into do it all and compaire them to the sizes they have.

[ZRX61]

Length is measured from the bottom of the head to the end of the thread.
No idea what size ya have now.. what size spanner fits it?
10mm: M6 (5mm allen key)
12mm: M8 (6mm allen key)
etc etc

[Azmodeus]

So the size of the allen key which fits it is the size of the bolt?

I went to B&Q, but the thread on this bolt is very wide apart, and there weren't any like that.

I am going to try the peugeot garage again, see if I can get any joy from them

[Scotsman37]

I would try an actual iron mongers rather than B&Q because they usually carry a wide range of bolt/nuts sold individually, etc, and some will custom make ones for you to your requirements. So show them an original one for comparison.

If that doesn't help you then do what the last person said and take it into your nearest certified puegeot dealer and their mechanic will be able to tell you or even take to some mechanic's garage no doubt they will have something like it in a box some where?

[alains]

if you do not find this send me a pm with what you are looking for (type of car , year , which bit and try to precise where it goes) i've a peugeot concess near my door and i can try to answer your problem
____________________
the worst day fishing is better than the best day working

[G]

[Git]

Go buy a thread guage tool, this will tell you the pitch the bolt has, alternatively goto a specialist nut and bolt place hand them the bolt and tell them you want the next size down or whatever it is you require.
I use ahc in camberley for all my nuts and bolts, they never fail to let me down

[alains]

well guys the size in metric are :
4x60 , 5x80 , 6x100 , 7x100 , 8x125 , 10x150 , 12x175
first number is the diameter , second number size of the thread
____________________
the worst day fishing is better than the best day working

[Azmodeus]

Just FYI - This is picture of one of the bolts.

Needs to be identicle to this one, but 1mm or so narrower

2 of them

[G]

Looks more like a self tapping screw of some kind.

I would just go to a local hardware store and get one that looks about right.

[alains]

this look to be self-taping screwing in plastic or soft material , can you precise where they are ?
____________________
the worst day fishing is better than the best day working

[Azmodeus]

Better yet, I'll show you

Sorry for the crap quality, but its only a cheap camera.

I have a metal plate which fits over the exhaust, and these 2 bolts/screws fix it on.

[Git]

Thats not a bolt, it's a screw, a panel screw...

[alains]

well drill through at 1mm more and put proper bolts with nuts
____________________
the worst day fishing is better than the best day working

[Azmodeus]

Only drill-bits I have are for plaster and wood. Plus I dont fancy mangling my bike for the sake of a cover.
And its the exhaust, so I cant get inside to screw on a nut.

Actually, thinking about it, would normal bolts be able to withstand the heat from the exhaust?

By the way - https://www.b3ta.com/board/4232187

[Git]

[Scotsman37]

Ones made of steel even stainless steel to avoid rusting is much better. If you can find an appropriate bolt with the correct length., but if you can't then cut it to length but you may need to file down the start of the thread just a tiny bit to get a smooth start to screwing it through the nut. Also, the bolt has to be of the correct diameter as to avoid movement of the exhaust.

Just remember to buy with it the matching nut for the bolt with a washer as that will help to keep a good tight fit.

You may find that your local iron monger can do the above work for you as mines does free of charge!

[Azmodeus]

Ok, semi-good news here:

I got in touch with the Peugeot garage. They have had a lot of problems with their supplier (which is true, because my local bike shop also uses the same supplier and hasn't had any deliveries for months).

They are expecting a package of 90 items Tuesday, all the stuff they have been waiting for. They said they will sort it out and send me everything they have. So the screw/bolts/whetever might be there, they might not. So finger crossed.

I will definately come back here and try some of your ideas if they dont turn up

[Scotsman37]

You can do it that way if you want as it will remove any burrs when undoing the nut, except I knew this person that was once an engineering instructor and he had the right tool for the right job which was very handy for me when I needed anything done !

[catgate]

I feel I must poke my nose in here.

[ZRX61]

Just buy a couple of Stainless self tappers from the hardware store, sorted.