No, you cannot connect to this thread. It is a straight thread designed for the nut to go onto, holding the fitting in the wall of the tank. All connections go on the inner part of the bulkhead, which is usually FNPT (female national pipe thread).
Title: Can I use the exterior male thread on a bulkhead fitting to connect to?
Description: How to connect to bulkhead fittings.
Published: 11/26/2007
Last Edited: 1/16/2023
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