Thanks for joining the NUC community.
I have checked specifications for Crucial CT51264BF160B and it does appear to be compatible. The only thing I have found is that CT51264BF160B works at both 1.35V and 1.5V . And your NUC works at 1.5V native.
I recommend using tested memory. A list is available here:
Not to be contrary, but I believe the NUC works at 1.35v native and doesn't support 1.5v at all.
Yes, sorry about the mistake, I meant 1.35V.