I am working on a DIY electronics project with the instructions posted online and they call for screws and nuts in imperial (US) format. Because I live in Europe, I need the screw and nut sizes in metric format. I have absolutely no idea about anything regarding this and I am turning to you guys for help. I tried doing some conversions myself but I am unsure about it.
Here are the screws and nuts I need in imperial (US) sizes:
- 4-40 thread, 3/8" long (https://www.mcmaster.com/90272A108/)
- 4-40 thread, 1/2" long (https://www.mcmaster.com/90272A110/)
- 4-40 thread, 5/8" long (https://www.mcmaster.com/90272A112/)
- 18-8 Stainless Steel, Number 2 size, 1/4" long (https://www.mcmaster.com/92470A095/)
- 4-40 thread size hex nut (https://www.mcmaster.com/90480A005/)
What are the equivalent screw and nut sizes in metric format? I figured they are M3 and this is as close as I've gotten with my own conversions but I'm unsure:
- M3x10 Phillips
- M3x12 Phillips
- M3x16 Phillips
- M3 hex nut
I would be very grateful for your answers and suggestions, especially with the thread forming screw (number 4 on the list). Also, any good ideas where I could buy those online in Europe would be greatly appreciated.