Tractor Sizing Farmtrac loader grease fitting size

[lewishope]

Does anyone know what size grease fitting is used on the farmtrac loaders?
I have a 2003 360DTC with the 5140 loader. There loader was made in NC. The parts manual says it's a M8x1.25. I can't find that size anywhere. Agri-supply doesn't sell it. Nor does Tractor Supply. I can't find anywhere on the net. Not even in a kit of assorted metric sizes They all have M8 or M8x1. The Farmtrac dealer gave me one (m8) that does not fit. He said that is the only 8mm fitting he can get.

I started thinking that since the loader is made in the USA, maybe it's SAE. The 5/16 fitting is 32 count threads matches prettty close. Could this be it for some silly reason they are using 5/16 inch fitting and giving an equivalent metric measurement.


5/16 inch is .3125 inches
8mm is about .315

1.25 thread is about 31.75 threads per inch close to 32

Any ideas

 

[BTDT]

Is the fitting completely gone/lost? Take one from another location on loader that is same size to NAPA and see if they can match it up. If it is truly metric, a foreign car dealership may have one to fit. I would drill out and tap to a size that I could get local. Good luck.

 

[DieselPower]

The only 5/16 grease fitting I know of is a 5/16 X 24. In metric the 8mm has a thread pitch of 1. And in SAE the 1/8 inch is a 27 pitch NPT and the 1/4 inch is a 18 NPT thread. I would take it to the local NAPA and try to match it up. I'm sure it's a standard size SAE or Metric size.