Rhino 660 Axle nut size question

[mpilihp]

Hi Im new here, I have a 2004 Rhino 660 with tracks I use to plow with and my left front track toe'd out on me last night, looking at it, it appears the axle nut fell off and is now lost in 2 ft of snow (had a blizzard)

I could order one online but will take a week or more to get, does anyone know the size and thread pitch so I can try and find one locally?

Thanks!

~ Phil