Technical 1959 Buick question

What seize is the Power Steering Pump Pulley Nut? I lost mine and I can't find any information on the internet. Our local part stores in Canada have no clue , car is to old.

 

I don't know but the nut for the end of the generator is the same as a tie rod jamb nut 11/16" NF so maybe buy a jamb nut from Speedway?

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@1959Buick .... If you have the pump, you can measure the threaded nub of the shaft for diameter. The thread should be either NF (national fine) or NC (national coarse). If you have or can borrow a thread pitch guage that would quickly identify the thread for certain.

Ray

 

I looks like 1/2"NF , but every Nut I bought does not fit

 

As I mentioned before, Speedway Motors chrome jam nut for $1.99 or stainless jam nuts for $2.99. They are fine thread and have ones from 3/8" to 11/16" in both LH and RH thread. Place an open end wrench over the end of the shaft to determine the size.

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just keep in mind that its a standard fine thread nut. you should be able to find something at local hardware store.

 

I wonder what pump that uses? maybe not the same as the later Saginaw pump?