National Pipe Thread - Thread Form

Thread Form

NPT and NPS threads have a 60° included angle and have a Sellers thread form (flattened peaks and valleys).

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Famous quotes containing the words thread and/or form:

    “I often wish for the end of the wretched remnant of my life; and that wish is a rational one; but then the innate principle of self-preservation, wisely implanted in our natures, for obvious purposes, opposes that wish, and makes us endeavour to spin out our thread as long as we can, however decayed and rotten it may be.”
    —Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)

    “When I was young my teachers were the old.
    I gave up fire for form till I was cold.”
    —Robert Frost (1874–1963)