Stainless Steel Adapter, 3/4-16 Male JIC 37 deg Flare To 3/4-16 Male JIC 37 deg Flare, 90 deg Elbow

Both ends are 3/4-16 male JIC 37-degree flare, so yes, you are working with identical threads on each side. That means whatever you connect to needs female JIC seats on both ends to mate up correctly. The 90-degree elbow body handles the direction change between them, which is what makes it useful when you are routing lines around tight clearances or fixed obstructions.