The Oxford English Dictionary’s first citation for the term spud wrench in print occurred in 1939 (though we were able to actually date a reference back to 1906). Per the OED, a book with the ...

Nine new spud wrenches feature large openings (9/16 to 2 in.) and conical rather than flat handles that taper to a point at the end. The handle lets workers align bolts, rivets, and flange holes.

The spud wrench can pull double duty. Casual home improvement projects don't usually call for a spud wrench, a tool that turns fasteners on one end and features a long, tapered spike on the other.