Actually, IH made a complete set of mechanic's hand tools, just like Craftsman. They were sold in the late 1970s through early 1980s, just before IH went through the big "sell out". My dad had a complete set, and I can remember seeing the display rack in his shop, but someone stole his tool box during one of their house moves and I have not seen another IH wrench for over 30 years.
Here is a photo from Ken Updyke's book, which, if you look closely in the front, you can see a tool box, jack, battery charger, and gas can, etc. They also made a few pressure washers and some other items, which you can see if you look around the picture. IH stopped producing all of these things after around 1982.