Yersmay
Writing, constructionDIY Member
In another thread, HJ observed that a basket strainer had 'rolled' threads instead of machined threads. He said this was disadvantageous because a slip nut will not tighten properly to a rolled thread. I'm curious about this. First, by observation how can one see the difference between a rolled thread and a machined thread? Why is a rolled thread harder to make water tight? Do experienced plumbers generally avoid rolled threads in all threaded plumbing applications? Are rolled threads present in only male threads, or are they present in female threads as well? Thanks in advance.