Measured the screws used in the under dash gauge assembly on #1352
4 ea. "Plastite Screw" , #4 x 1/4", slotted , countersunk, oval head, black oxide finish.
These hold the instruments in the two pod housings.
Note: Plastite screws are used with plastic, aluminum, and pot metal applications.
2 ea. #6 x 3/8" , slotted, pan head. Black oxide finish.
These hold the filler plate to the main housing.
Your car may be different, but this is what I found, and works in my car.
Thanks
Brent A