I'm coming across so many of these cross+slot bits like the ones in MCBs that I need to get some hex bits for them I think.
Do they have a special name?
What are the special cross+slot screwdrivers for MCBs etc. called?
Dec 16, 2025
Last reply: 6 months ago
6 Replies
After a bit of searching on eBay and Amazon I think I have found the answer, they're called Modulo screwdrivers, and they are quite pricey!
Search for plusminus
Ah, another name for them, thank you.
Modulo.
After searching some more I found that in addition to the 'modulo' and 'plusminus' noted here, they are called by the cross-head 'root' name, prefixed with F, so they are, for example:-
FPH2 - For a Philips size 2 FPZ1 - For a Pozidrive size 1 ... and so on.
Using these designations it's easy to find reasonably cheap sets.
I'd never noticed them being called that ...
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