How long of a nail should I use?

If the board you are fastening to another is not going to bear weight, it should be a half inch longer than the board is thick. If it is going to bear weight, it should be 2-1/2 times the thickness of the material to be fastened.

Check your state and local codes before starting any project. Follow all safety precautions. Information in this document has been furnished by the North American Retail Hardware Association (NRHA) and associated contributors. Every effort has been made to ensure accuracy and safety. Neither NRHA, any contributor nor the retailer can be held responsible for damages or injuries resulting from the use of the information in this document.