Thread Standards
There are many systems for specifying the dimensions of screws, but in much of the world the ISO metric screw thread preferred series has displaced the many older systems. Other relatively common systems include the British Standard Whitworth, BA system (British Association), and the Unified Thread Standard.
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Famous quotes containing the words thread and/or standards:
“Deep in the sun-searched growths the dragonfly
Hangs like a blue thread loosened from the sky—
So this winged hour is dropped to us from above.
Oh! clasp we to our hearts, for deathless dower,
This close-companioned inarticulate hour
When twofold silence was the song of love.”
—Dante Gabriel Rossetti (1828–1882)
“To arrive at a just estimate of a renowned man’s character one must judge it by the standards of his time, not ours.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)