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:
“A sleeping man holds in a circle around him the thread of the hours, the order of years and of worlds. He consults them instinctively upon awaking and in one second reads in them the point of the earth that he occupies, the time past until his arousal; but their ranks can be mingled or broken.”
—Marcel Proust (1871–1922)
“There is a sort of veteran women of condition, who, having lived always in the grand mode, and having possibly had some gallantries, together with the experience of five and twenty or thirty years, form a young fellow better than all the rules that can be given him.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)