Product review (5 stars): so all seems to be good.
The cutoff has only one screw hole and a tab that doesn't quite fit where it's supposed to, whereas the part I replaced has two screw holes;  so I have only one screw holding the cutoff in place.  But I'm confident I provided the proper part number, and different vendors showed pictures of the same part I received.  At any rate, the parts came a day earlier than the earliest estimated day of delivery, the one screw seems to be holding it secure, and my dryer is making hot air now, so all seems to be good.