I am with KennyD, get rid of the BSPP. I would also get rid of NPTF fittings, in favor of JIC or ORFS
Kind of hard to get rid of them, because the cylinder on the grapple is also sourced in Europe so that's got the same thread too, and I'm not replacing a cylinder and two hoses because I don't like a fitting. My homemade 3PH log splitter I made 10 years ago has all NPT hoses, elbows, and control valve... My Wallenstein chipper from 10 or so years ago also has NPT hoses control, and flow valves... come to think of it, i don't know whether I've ever seen a splitter control valve or flow valve that wasn't NPT. I love you guys for the knowledge, but sometimes the solutions to a simple question are so over the top that I don't know what to do other than shake my head.
I was only hoping that any of you who had a preferred online supplier would check for the adapter and provide me a US seller's site that I hadn't found on my own to avoid mail ordering from China, but I guess there's some stuff that just isn't easy to find here. I had to buy a fan for a TEFC motor on Amazon shipped from China last year, so I guess I'll do the same for these fittings.