![wood - When pre-drilling for screws, how do you determine the correct bit diameter? - Home Improvement Stack Exchange wood - When pre-drilling for screws, how do you determine the correct bit diameter? - Home Improvement Stack Exchange](https://i.stack.imgur.com/QFhEk.jpg)
wood - When pre-drilling for screws, how do you determine the correct bit diameter? - Home Improvement Stack Exchange
![Hillman 5/16-in x 6-in Hot-Dipped Galvanized Hex-Head Exterior Lag Screws in the Lag Screws department at Lowes.com Hillman 5/16-in x 6-in Hot-Dipped Galvanized Hex-Head Exterior Lag Screws in the Lag Screws department at Lowes.com](https://mobileimages.lowes.com/productimages/4eca375f-e23d-4db2-8bf9-a6197f8bdf2d/42236934.jpg?size=pdhism)
Hillman 5/16-in x 6-in Hot-Dipped Galvanized Hex-Head Exterior Lag Screws in the Lag Screws department at Lowes.com
![mounting - What drill bit size to pilot drill hole into stud for 15/64" lag screw? - Home Improvement Stack Exchange mounting - What drill bit size to pilot drill hole into stud for 15/64" lag screw? - Home Improvement Stack Exchange](https://i.stack.imgur.com/680jM.png)
mounting - What drill bit size to pilot drill hole into stud for 15/64" lag screw? - Home Improvement Stack Exchange
Is it okay to use a 7/32 pilot hole for a 3/8 lag screw? It says 1/4 but I have 3 sets of drill bits all missing the 1/4 bit and don't
![Hillman 1/4-in x 5-1/2-in Zinc-Plated Hex-Head Interior Lag Screws in the Lag Screws department at Lowes.com Hillman 1/4-in x 5-1/2-in Zinc-Plated Hex-Head Interior Lag Screws in the Lag Screws department at Lowes.com](https://mobileimages.lowes.com/productimages/21bac9eb-557e-49b0-a0e8-a50d1e93345c/16132545.jpg)