Topic
JIC, ORFS, BSPP, BSPT, NPT, metric DIN 24° and SAE flange — how to tell them apart with a gauge and a caliper, and which of them will thread together and still leak.
3 articles
Four families cover almost every hydraulic connection you will meet. What each one seals on, which are re-makeable, and which pairs will thread together and still fail.
They share a thread form and a size designation, and they do not seal the same way. How to tell them apart on the bench, and what happens when they are mixed.
Four thread families cover almost everything on a machine in the Gulf. Here is how to tell them apart with a caliper and a thread gauge — and why two of them will thread together and still leak.