Yes. They seem to be.
Although when I've bought them, I've noticed small differences in length or how they are notched.
I know I took some photos recently. lemme see if I can find some.
Here's one I bought that was made by Packard
The ones below were also made by Packard but are longer and have a D-shaped hole. They are on a repop engine harness made by M&H that I bought from Year One.
Very similar to these originals in my '67 other than the PED stamp.
Here's an original one from a fuel sending unit next to the tinned one I bought (with the small round hole). You can see what I bought is shorter than the original. The original also has a step on both sides.
I have not figured out the part numbers or sources to get the more correct ones. But the ones on some repop harnesses are pretty close so they must be available.