A __________ bolt size should be selected to fit through a 1/2-inch hole in the foot of a motor mount.

Selecting the appropriate bolt size is crucial for ensuring proper fitting and functionality in mechanical applications. In this case, to fit through a 1/2-inch hole in the foot of a motor mount, it is important to choose a bolt that allows for clearance and not a tight fit.

A 7/16-inch bolt provides a snug fit for the mounting purpose, as it is slightly smaller than the hole diameter, allowing for easy insertion without the risk of the bolt binding. This is important because using a bolt that is the same size as the diameter of the hole, such as a 1/2-inch bolt, might not allow for any clearance or movement during installation. Additionally, selecting a larger size, like a 9/16-inch or a 1/2-inch, could create difficulty in fitting the bolt through the hole.

Thus, the best choice is the 7/16-inch bolt, which strikes the right balance between being secure and allowing for proper fitment in the motor mount.