Casting Numbers

What you are seeing is the casting or forging number for the base part. These numbers are typically found on slip yokes, weld yokes, flange yokes, double cardan stud yokes and "h" yokes and many more parts. Most often if the part is a "casting" it will have a number that starts with a "C" and if it is a forging then it will start with an "F". This most often is never the actual part number because the factory may make many different part numbers from one base casting or forging. It is a smart way for the manufacturers to cut costs on similar parts. So when you see the number on the yoke does not match the number on the box...don't panic. It's not supposed to match!