With that info in the manual you can get a new lock to fit in Tractor Supply. It's located in the hardware isle. If I remember correctly it's for 1/2 inch thick wood drawer facing. That 1/2 inch denotes how thick the wood is but directly relates to the length of the lock between the lock base and the end of the lock where the blade mounts. It's not a 1/2 inch between the base of the lock and the blade. It's actually longer than that. Tractor Supply sells all the same size cabinet locks keyed alike.
I replaced all the locks on my Vetter gear on my bike. Some had already been drilled out and none of the others had Key's so I had to drill those out myself. All my locks on the Vetter gear is keyed alike as a result. I still get nice comments on my Honda VT600 with a Windjammer 4, bags, and trunk. Mostly it's from people that have never seen a bike fitted out in Vetter gear and ask what it is. Then there are the older biker's that remember it and are shocked to see it on a modern bike. Due to design changes in modern bikes like wider forks and gas tanks it's not possible to fit an old Windjammer on them.