Fastener engineers - need some confirmation

[Tippy]

Aluminum threads don't like a lot of cycles, hence studs. But with the low torque of these, bolts would probably be just fine.

[juanbenae]

Originally Posted by Jonny042

Just thinking out loud, but drilled heads on allen head bolts and safety wire could work too.

with turbo valve covers there might be material adjacent to the drilled allen to anchor a long tether of safety wire to, but it would over time ruin the aluminum valve covers one might think.

stop thinking aloud...