Sam,
Check out this pic of a Suzuki d-shaft. This is what a flat flange looks like. The U-joint is captured in a "companion flange" (d-shaft industry name for it) at the end of the d-shaft that terminates in a flat flange. Then you would get a corresponding flat flange yoke for your axle.
Here's a pic of a Ford Exploder d-shaft with flat flange and the corresponding pinion yoke:
Another pic:
Hope this helps!
Check out this pic of a Suzuki d-shaft. This is what a flat flange looks like. The U-joint is captured in a "companion flange" (d-shaft industry name for it) at the end of the d-shaft that terminates in a flat flange. Then you would get a corresponding flat flange yoke for your axle.
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Here's a pic of a Ford Exploder d-shaft with flat flange and the corresponding pinion yoke:
Another pic:
Hope this helps!