What screw do i use?

[soakka]

I have been building a computer today, and when I went to mount the motherboard, I saw i needed screws to go into the standoffs. I looked into the box of screws my case came with, and there are 2 that will fit in the standoff. (The motherboard is a z170-a and the case is S340). The 2 types of screws are the 6-32 screw flat, and the M3*5Flat screws. They both seem to thread into the standoff, but is there a proper one to use?

Thanks!

 

[rolli59]

6-32 is the correct one M3 is smaller and is for drives.

 

[Ubrales]

The #6-32 x 1/4" hex head screws are for the standoffs. The metric screws are for HDDs and SSDs, especially SSDs.

 

[soakka]

Thank you very much, you are a lifesaver!