Neapco N3-83-024X 1350 series double cardan cv flange yoke. 
Stud Socket: Accepts 0.5" diameter pin 
U-Joint Series: 1350
Pilot Diameter: 2.00" Female
Bolt Circle: 4.25"
Bolt Hole Threaded: YES M12x1.75
Center Line of U-Joint to Face of Flange: 1.625"
 
Same fitment as Spicer 212024X
Used on many Ford transfercases, especially for front driveshafts.
Most common pattern for Atlas and 205 transfercases with aftermarket flanges, but you will need to drill out the threads. (there is no option that does not come threaded)