Cartridge mount screws - stainless steel


I need longer mount screws to mount my cartridge, can i use plain steel screws or must i use stainless steel screws . I am having a hard time finding small stainless srews, 20 mm long locally.
tshulba
I was not able to locate stainless or brass screws today at least not 20 mm length only shorter ones, they told me they weren't available from the supplier. I purchased a die and made my own brass screws on the lathe , took about .5 hr.
Mounted up the ZYX Airy 3 on the Graham Phantom with the spacer they provide now i have to re-adjust everything.
I had to install the spacer under the cartridge cause my VTA was as low as i could go and i needed to lower it more.
Hi ; If you want to go over the edge Elusivedisc dot com has carbon fiber screws they look great until I saw the price check em out
$199 for two screws- I'm definetely going to pass.
This is one of the most rediculously priced items I've encountered lately.
For $199 i will have to try making some carbon fiber bolts. I have machined carbon fiber rods down to size so i will have to try threading it now.