Question about the crankshaft pulley bolt

[Adeleandre]

Hi, I no longer have the crankshaft pulley bolt on my 223 from 1961, I'm having a bit of trouble with the American dimension bolts, could someone give me the diameter and length ?

 

[Sickboy49]

Let me see what I can dig up for you over the weekend. I just had mine out a few months ago and I should have denoted it "somewhere".

 

[Adeleandre]

Great thank you !! By measuring the thread in the pulley with a caliper I think it is 9/16 UNF but I am not sure

 

[manglass]

According to the Ford Parts Manual it is 9/16 - 18 x 1 3/4"

Lou Manglass

 

[Adeleandre]

Thank you very much, does 18 mean UNF ?

 

[aussie7mains]

Thank you very much, does 18 mean UNF ?

18 TPI, threads per inch, UNF is the thread form. Yes it should be UNF, unified national fine. Length is 45mm for metric people.

 

[Adeleandre]

Thank you very much to you for informing me

 

[Adeleandre]

I received my 9/16 UNF bolt (there are no American screws in stores in France ) and it's all good