Does anyone know what the thread pitch is on a IH 424 tach cable? Not sure what year the tractor actually is or if it is a 424. Looks to be in the 2444/444 family. Vin is painted over and damaged. I was told a 1964 when I bought it. It does have a BD 154 2.5L diesel. I bought the tach drive assembly but the tach cable I ordered is too big. It is not a 5/8 x 7/8. I have seen 7/16 x 5/8 and also a 13mm x 5/8. Any part numbers out there for a direct replacement? The tach gear assembly was for a IH384 and it fits.