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H6 - Federal Item Name Directory
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13672
STEM,ROTARY WELL DRILLING
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FIIG: A23900
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Entry Date: Apr-01-1974
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Concept:
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Status: A
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Applicability: A
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Type: 0
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Definition: The uppermost joint of a string of drill pipe. It passes through the rotating mechanism of a rotary well drilling machine and may be rotated and simultaneously moved vertically by means of evenly spaced driving flutes or flats running lengthwise to within a few inches of either end. The upper end usually has a left-hand thread for connection by means of an adapter to the body of a swivel, but may also be connected to the adapter or swivel by means of a coupling. The lower end has a right-hand thread for connection to a short length of drill pipe.
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Corresponding NIINs: 2
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