Yes they are. In fact the screws to mount your PSU should come with your PSU and the chassis as well. If you're unsure of what screws to pick out if you've lost them, they're 6-32 threading. they can also be found as thumb screws for most case side panels:
Yes they are. In fact the screws to mount your PSU should come with your PSU and the chassis as well. If you're unsure of what screws to pick out if you've lost them, they're 6-32 threading. they can also be found as thumb screws for most case side panels: