Toolcat 5600 size of nut

[ulmn]

Can somebody tell me the size of nut that holds the windshield wiper arm in place?

 

[Xfaxman]

What Series is your 5600?

The part number for my 5610 series F, is 6681910.

When out and looked, can't see the nut, there is a cap over it. Can't get to it without removing the visor from the roof.

 

[ulmn]

Sorry about that, mine is a d series. And yes it's under that black cap and it is tight, but it can be removed without taking the sun visor off

 

[Xfaxman]

So do you need the nut size to get the right socket, or the thread size to get a new nut?

 

[ulmn]

The size of thread