FWIW if you have access to a lathe and a bit of time, I turned my own just to give longer nuts (about 1-1/4" long), easier to find and easier to get a grip in there. #10-32 thread I believe. Center drilled and tapped some O1 knurled the ends.
1949 Chevrolet 3/4 Ton - Still Solid. Regular Driver OT Vehicles: 1925 Hudson Brougham Super Six 1950 Chevrolet Styline (Parts) 1952 Canuck Pontiac Sedan Delivery (Well Underway) 1973 F250 4x4 Highboy 1977 F250 4x4 Lowboy