Wasn't sure whether to post this on ELU or here, but thought I would have better luck here. Anyway Merriam Webster defines a Stud Bolt as
a bolt with threads on both ends designed to be screwed permanently
into a fixed part at one end and to receive a nut on the other.
Is the first part of the definition – screwed permanently into a fixed part – always true for a stud bolt? If so, what do you call the threaded rod that fully penetrates two parts and is attached with a nut on both ends like you would see for piping flanges?
Best Answer
According to Hardhat Engineer, the correct term to use is stud bolt. While a stud bolt frequently (most often?) is used where one end is screwed permanently into a fixed part, like the dictionary says (think of the stud bolts for a cylinder head), it can also apparently refer to a bolt with a nut on each end as shown below
I agree that this looks like threaded rod, but I do not think that threaded rod is necessarily designed for the stress encountered in a bolting application.