I guess it depends what you are putting in it. If you are using it for a bolt you would use 13/16. Otherwise I guess you would use a 3/4 inch bit.
The 3/8 drill is one eighth larger.
For a clearance hole you need a 9/64 drill bit.
i would use a long shafted hole saw
If you want the bolt to slide through the hole a 5/16 hole will work well.
by using a drill
The recommended drill bit size for a 15/64 inch hole is a 15/64 inch drill bit.
The recommended size of the drill bit for a 7/16 inch hole is a 7/16 inch drill bit.
Yes
A 3/16 inch pilot hole drill bit should be used for installing a 1/4 inch screw into hardwood.
quarter inch drill bit
7/8 diameter drill or .875
The time it takes to drill a hole depends on the material being drilled, the size of the hole and the machine doing the drilling. But you knew that. It takes longer to chuck a bit in a drill than to actually punch an eighth inch hole through a piece of quarter inch plywood. But drilling a one inch hole through a twelve by twelve framing timber takes longer. Particularly if you're using a brace and bit. Are you drilling a four inch hole through a twelve inch thick slab of reinforced concrete? Roll up your sleeves and make sure you have a good water supply to lubricate and cool the diamond coring bit on your rig. Planning on punching a thirty inch hole through a thousand feet of mixed earth and rock to mount an emergency rescue effort of some trapped miners? Order out for some lunches. You and your crew will at this one for a while.