Need a replacement for an out of stock part

[PaulHutch]

@bart

They all seem to have a contact form of 2 form C. Is that the “footprint” for the holes on the PCB?

No, that’s the contact arrangement, see:

Understanding Form A, Form B, Form C Contact Configuration

What does it mean in relays or reed switches when the contacts are listed as Form A, Form B or Form C? This is a short hand way of describing contact configuration. A “Form A” would mean the contacts are normally open when the coil of the relay is not energized or the there is no magnetic field nearby in a reed switch. A “Form B” would mean the contacts are normally Closed when the coil of the relay is not energized or the there is no magnetic field nearby in a reed switch. A “Form C” would …

AFAIK, to find a matching PCB footprint requires manually comparing the drawings for the alternatives to the original. This is one of those incredibly long boring tasks I end up doing before PCB layout so that there are known substitutes for my employers products’.