Modeling a Double Lead Thread

Hey Everyone, any input is greatly appreciated. I have a part in my future that will need a double lead thread. Has anyone ever modeled a double lead thread into a part? and if so do you have any information, advice, direction that would help me. I have only modeled single lead threads, which explains the reason behind this thread. Thanks again in advance..

Thread Info:

5/16-18 Doube Lead

Cheers,

John Sanchez

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