Latitude 7212 Rugged Extreme tablet - need part number for SSD heatsink

Hello,

I got a Latitude 7212 Rugged Extreme tablet here which at some point had its SSD replaced, and whoever did it forgot to reinstall the SSD heatsink. So I now need to know the Dell part numbers for the heatsink and the attachment screws as marked up in yellow so I can order a new one from somewhere:

Thanks,