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Help identify casing hanger threads

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Philrock

Mechanical
Dec 30, 2001
311
US
I'm reverse engineering an 11" 3,000 lb. casing hanger, and would appreciate some help identifying the tapered threads at the ends of the fitting. The threads have a 5.545" diameter x .55" deep lead-in recess, and the threads are about 3.4" long. I have been told that they 8-Round threads.

I went through a 2010 version of API 5B, and was not able to find a thread as large as the one in the part I'm working with.

Any help identifying these threads so I can put the proper callout on the drawing would be appreciated.
 
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Never mind - I found it in API 5B - it's called "casing long thread."
 
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