[T3] Fan Housing Screws

[Know One]

Some of the screws holding the fan housing together have serrations.

I've added a picture of a screw to the album with the cool tins.

https://www.flickr.com/photos/52053275@N00/albums/72157670647048993

These screws look ideal for the initial installation to cut threads during installation.

I'm concerned about the serrated screws cutting new threads or enlarging the holes during installation and am thinking about replacing them with regularly threaded screws.

Jeff '67 Sqbk