Length and size of header studs?
The length of one side of the threaded portion is 15 mm-- both sides are equal length. Total length of the stud including non-threaded center is 36 mm. There's a slight taper on the very end of the stud ends.
Having said that, I bought my genuine Merc studs from a place called World Impex. Their website really sucks, but they've been around forever and are legit/trustworthy. If you type in "A2729900005" in their search, you'll get the right studs. I'm looking at the baggie right now.






