Barrel nut screwdrivers are special tools that simplify the installation and removal of “barrel nuts” that are commonly used on most Navy terminal boards and fuse panels. The barrel nut is round, with a slotted top to accommodate a screwdriver. The stud on which the barrel nut is installed is frequently long enough to protrude through the barrel nut making it difficult, if not impossible, to engage, or maintain engagement with the slot in the barrel nut.