screws
I was repairing Sony headphones when I saw some screws were missing. As all screws were the same, I took off a non missing screw to see what size and thread it was.
I measured the outer diameter and it was 2mm. I measured the pitch and it was around 0.6mm. What standard is that? M2 would have 3 times smaller of a pitch. What standard is typically used in electronic devices? Where can I find this type of screw?
M5 Pan head machine screw.
Edit: M5 screws have a 5mm shaft.
Edit2.1 (my apologies): This is an M5-0.80 screw. 0.8 refers to the thread pitch, which (for metric screws) is measured by dividing 9.6mm by 12 threads, which equals 0.80. The picture above shows a minor optical illusion of 12 threads over 10mm (pitch = 0.8333); but M5-0.85 screws simply don't exist.
My guess is that this is a Clutch type screw. (First row, sixth column)
Best Answer
The type of screw that you describe is a special design with a large pitch on the the threads to create its own threads in the mating plastic part. You can find these at McMaster-Carr or other specialty fastener supplier.
(Link to supplier page for 6mm length).
(Link to another supplier page for 6mm).