Hey there, I changed the U-joints my 1993 f150, 4.9l manual, SB 139" Wb.
I couldn't get but one of the bolts of the rear yoke off the regular way (I treid everything...) so I ground them off. Well to my surprise they are impossible to find at Ford and the local autostores. Would anyone know the following?
-What exactly is the thread. ? I seem to read 1/2-13, but when I purchased similar grade 8 threaded bolts at hardware store they seemed to big? what am I missing?
-Where online could I purchase OEM bolts..?
Cheers!

 

Junk yard, maybe.

 

They are metric, 12mm do a search for: ford 12mm drive shaft bolts I got lots of results has them. They're about $15 for 4.

 

I know the head is 12 mm 12pt if that helps at all