If you can find the 3/8 one with the small hole you can purchase the #10 stamped nut .56 D Mech ZDC P/N B-12980 from AMK and make your own.
You'll need to take the small hole 3/8 and remove the stamped nut and replace it with the #10 nut. Not 100% correct but you won't see it in the end
Contact me if you need help with the process