Nut and Bolts

Most (99% in the US) Owner/Operator companies and Engineer/Constructor companies do not use "headed Bolts" for piping. They use Threaded "Studs" with a Nut on both ends for through bolt flange make-up. They use "Cap Screws" for objects with a threaded hole.

Where are you that "headed Bolts" are being used for the Piping you describe?

Hello Ihave just come in on this question( not the original poster).

Here in the UK we use bolts for pipe fitting. This is because the bolts come in different grades for the pipe pressures in question.

All the studing is suppied as mild steel or stainless. And not as high tensile as needed in bolt form.

These bolts are put in with thier heads at the bottom so that it can be seen if a bolt falls out or is missing.

By using studding and nuts you may be cutting down on the cost. But by the time you have cut the studing down, I do not think you will have saved that much.

But then I do not know the application that you use the studding for.