M2.5 is a regular ISO/DIN metric screw thread.
They won't change a form factor that's been there as part of the factory tooling since the RPi B+ launch in 2014.
It won't make such a difference to drill the holes to 3mm backward compatibility is assured. And i am not the only one, who must drill the holes bigger, because 3 mm is much more common.Ernst wrote: ↑Thu Aug 08, 2019 6:25 amM2.5 is a regular ISO/DIN metric screw thread.
It won't make such a difference to drill the holes to 3mm backward compatibility is assured.
I'd disagree strongly. M2.5 is one of the R5 preferred sizes: 2.5, 4, 6, 10, etc.
No no no no, please don't bring UNC/UNF/ASME confusables in here! Here in Canada we have a horrible mess of weird customary sizes that crowds out metric sizes — and we are a metric country! Hardware suppliers in both the UK and the US are much more metric than we are here.M2 is flimsy. M3 is a bit on the large side. Perhaps the choice towards UNC 3 was constrained but it is not to the advantage of end users in general and it is to the disadvantage of those living in regions where metric is traditional.
LOL that preferred numbers are completely irrelevant in the world of metric screws!
That's a valid point !
Nope: ISO 261 and ISO 262 metric screw sizes are based on the R10 and R5 series.
Does the 2, 3 and 4 refer to the size of hammer you need to drive it in?
That's nothing. We get Torx, Hex, even crosshead clones that are neither Philips nor Pozidrive. And that's before anyone starts on the special security versions.
I am speaking of experience, what you get in every European hardware store, you appear to have got another experience, really?