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Metric Bolt pitch

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Mike_Berkshire:
Not sure where to post this but as Im rebuilding a CB550 I thought I would post the question here; apologies if this belongs somewhere else.

I have just bought a tap and die set and there is a set of thread pitch gauges in it. I haven't come across thread guages before. In the past when dealing with metric screws I have just worked on the basis that all M4, M3, M2 pitches are standard & the same; I haven't had much to do with larger screws and bolts. From the set of gauges there are obviously different pitches of metric screw threads made. If I am buying screws/bolts for the bike do I have to be careful I buy with the right pitch thread? I notice that if I randomly search for 'M8 Steel Bolts' using Google that there are multiple suppliers come up but they don't specify different pitches of thread; just 'M8'.

Cheers

DomP:
Yes definitely be careful, quite a few bolts on Hondas are metric fine thread, from memory on a 550 the bottom yoke bolts are m10 metric fine for example as are the rear shock bolts and dome nuts.  Middletons stainlesscare a good source.

taysidedragon:
Google t'internet to find a table of Metric Thread Pitches. Save it or print it out so you always have a reference  of Coarse, Fine or Extra fine thread pitches.
The common Metric pitch is coarse, that's usually what is sold by DIY stores if not otherwise specified.

taysidedragon:
Link to previous topic.

https://www.sohc.co.uk/index.php/topic,24619.msg224177.html#msg224177

Bryanj:
If they still do them Zeus tables are good

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