Are M3x12b screws the same as M3X12?
Hi,
I want to replace the screws for my heat bed. In Section 7, Step 13 of the guide, the screws are listed as M3X12b. Are these the same as M3X12 screws? The 'b' is throwing me off. I know the screws need to be countersunk but should I look for anything else when looking for their replacements?
Thanks,
-p
RE: Are M3x12b screws the same as M3X12?
I just received an email from Prusa support on this. For anyone else wondering, the 'b' just signifies countersunk. Here is their exact response:
Hello,
The "b" is supposed to signify that the screw is countersunk. We use stainless steel fasteners, but the material doesn't matter much.
Have a nice day!
RE: Are M3x12b screws the same as M3X12?
I would also use stainless steel screws as they re less magnetic and as the pinda works by inductance then a different material could effect the pinda in theory.
RE: Are M3x12b screws the same as M3X12?
I don't know about the rest of the world, but here in the US we call that head style Bugle head, perhaps that could be the B designation. 🤔
The Filament Whisperer
RE: Are M3x12b screws the same as M3X12?
Most of the 'rest of the world' uses the DIN standard. Countersunk screws with Allen head are DIN 7991.
RE:
Maybe Prusa means this with M3x10b (smaller head diameter = DIN 965 or ISO 7046):
hex is DIN7991 or ISO 10642
wbr,
Karl
Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen.
RE: Are M3x12b screws the same as M3X12?
German standard DIN 7991 is what you are looking for.