Thread Form
NPT and NPS threads have a 60° included angle and have a Sellers thread form (flattened peaks and valleys).
Read more about this topic: National Pipe Thread
Famous quotes containing the words thread and/or form:
“There’s something like a line of gold thread running through a man’s words when he talks to his daughter, and gradually over the years it gets to be long enough for you pick up in your hands and weave into a cloth that feels like love itself. It’s another thing, though, to hold up that cloth for inspection.”
—John Gregory Brown (20th century)
“Fantasy is a product of thought, Imagination of sensibility. If the thinking, discursive mind turns to speculation, the result is Fantasy; if, however, the sensitive, intuitive mind turns to speculation, the result is Imagination. Fantasy may be visionary, but it is cold and logical. Imagination is sensuous and instinctive. Both have form, but the form of Fantasy is analogous to Exposition, that of Imagination to Narrative.”
—Sir Herbert Read (1893–1968)