For a clearance hole you need a 9/64 drill bit.
quarter inch drill bit
If you want the bolt to slide through the hole a 5/16 hole will work well.
Bolts are categorised by their thread size. The standard socket size for a bolt with a three quarter inch thread is 1 and one eighth inches. Heavy head bolts use a one and a quarter inch socket.
A 1 1/4" wrench will fit a bolt of the same size .
For a 1/2 inch lag bolt, you should use a drill bit that is slightly smaller in diameter, typically a 7/16 inch drill bit. This allows for a snug fit and proper anchoring of the bolt.
To accommodate a 3/8 bolt, drill a hole that is 3/8 inch in diameter.
A 3/16 drill bit.
For installing heavy-duty shelves in your garage, you should use a 3/8 inch lag bolt drill bit.
The recommended drill bit size for a 5/16 inch screw is 1/8 inch.
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.
There are several bolt and nut sizes associated with the 1997 Chevrolet truck bed. The bolt and not sizes range from a half inch to three-quarter inches.