Projected Tolerance Zone with Slot Position

[flash3780]

Per the title: Is it legitimate to use a projected tolerance zone for the position of a slot, as you would with a hole.
I think that it is legitimate based on my understanding of projected tolerance, but I've never come across it in the wild.

ASME Y14.5-2009 Para 7.4.1 recommends use of projected tolerance for fixed fasteners, but gives no mention of slots. An example of where I think that this might be appropriate for a slot would be a keyslot with an interference fit. If the tolerance is projected over the height of the key, the projected tolerance callout is very functional.

But, since I haven't ever seen projected tolerance used this way, I wonder if the intention would be clear to others.
Is the interpretation in the image below what one might expect?

 

[greenimi]

What would be the functional resons of such approach?
Or maybe your inquiry is for academic purpose only?
Please advise.

 

[CheckerHater]

The application of the projected tolerance zone shall be used where the variation in orientation of threaded or press-fit holes could cause fasteners, such as screws, studs, or pins, to interfere with mating parts.

The way definition is formulated, projected zone shall be used for fasteners.

Nevertheless, it is legal to apply GD&T to assemblies, so you can specify positional variation to mating part being inserted into the slot.

"For every expert there is an equal and opposite expert"
Arthur C. Clarke Profiles of the future

 

[3DDave]

thread1103-507550

Ignore the Diameter references and it works the same for slots.

 

[flash3780]

What would be the functional resons of such approach?
Or maybe your inquiry is for academic purpose only?
Please advise.

One example might be a rectangular key which is installed into the slot. This would be similar to a dowel pin installed into a hole.
The projected tolerance will ensure that the key (or pin) can assemble into its mating part, including any perpendicularity error.

 

[flash3780]

The way definition is formulated, projected zone shall be used for fasteners.

Which brings up an interesting question: "Does a key count as a fastener?"

Apparently ASME is considering a dowel pin to be a fastener, per the ASME Y14.5-2018 quotation.
A key is similar to a dowel pin in function.

 

[flash3780]

Based on the responses, it seems as though projected tolerance on a slot positional tolerance would be well understood.
Thanks for the feedback!