Which is why I thought it would be 4mm af. Could they be BA, it would seem more likely, but will check tomorrow.Beware, if the nuts are 2mm across, they are not M2. The M2 reference is the diameter of the thread of the bolt.
I have just measured a 12 BA nut and it is 2.25mm (AF), which means your nuts and bolts are smaller than this, it may be 14 BA, but I cannot find any specifications on this size.The nuts are 2mm across as ar3 the bolt heads. As I’ve never needed anything this small before I was hoping for some suggestions to help me avoid buying something tatty.
I don’t eat peanut butterWiha
The M2 nomenclature, refers to the fastenings beings to the metric specifications, and the thread being nominally '2mm' in diameter..So im now really confused. I want the socket to help attach my newly acquired Bertram Heyn point levers to some points.
The info I have is that the nuts/bolts required are M2, so I ordered some M2 nuts and M2 washers off eBay and they fit onto the existing bolts perfectly.
Unfortunately, all I have to try and tighten the nuts are tweezers or pliers, hence my desire to get a suitable socket driver.
I’ll take a look at the site suggested by Gérard.
Thanks
Thanks Phil - I now understand! Last time I had to worry about this was when I used to work on my own cars and it was a case of what nut size (amazing how many 10,11 and 13 mm nuts in a typical engine!)The M2 nomenclature, refers to the fastenings beings to the metric specifications, and the thread being nominally '2mm' in diameter..
The nuts, and hexagonal bolt-heads, will obviously be larger than this (in this case 4mm AF (Across Flats) so you require a 4mm AF spanner or nut-driver..
To save us having to remember which size spanner, fits which size nut, metric spanners are marked with the 'M' designation we use for the nominal thread-size.
PhilP.
Merci beaucoup! Looks just the ticket.View attachment 300565View attachment 300564
This could be the metric solution of your metric problem...very serious and fast delivery.
I must admit I have never seen the "M" size on a metric spanner, a lot of my spanners are old, from Italian and Japanese motorbike work in the 60s and 70s, but even some smaller ones I have just bought this year do not have the "M" size.To save us having to remember which size spanner, fits which size nut, metric spanners are marked with the 'M' designation we use for the nominal thread-size.
PhilP.
I think this is a case of 'dumbing-down'?I must admit I have never seen the "M" size on a metric spanner, a lot of my spanners are old, from Italian and Japanese motorbike work in the 60s and 70s, but even some smaller ones I have just bought this year do not have the "M" size.