Howdy, I have a 1948 Chevrolet Pick-up truck. The interior of the Cab has these screws on the trim lines (ceiling and doors) that have a "Clutch head" socket. I was just curious if anyone knows what size they are, is it 5/32 or??? Hoping I can go to the HomeDepot store and find a Clutch Head bit. Knowing the size would be helpful.