Safe washers to use with the CPU bracket?

ConslePeasant

Commendable
Apr 8, 2017
77
0
1,630
I "installed" an h100iv2 last night. When I booted up the system the first time I looked into the bios to witness the awesome cooling, and then watched in horror as the tempature climbed until it hit 90 and turned off. I blame this on one thing, the extremely wobbly bracket on my MSI B350 MOBO. I installed the standoffs, but the stupid bracket pushed back alot. I figured that I could get it snug if I used some washers to get the hexagonal things flush with the board. What would be some safe washers to use for this purpose?
 

ConslePeasant

Commendable
Apr 8, 2017
77
0
1,630
I am using the stock backplae that came with the MOBO, I don't believe I have to do anything special to install it. The screws that I am using are the standoffs that are referenced in the directions.