Are there any current production strats that use 1 11/16th nut width?

Lots of them have 1 11/16" nuts. American Standards, American Deluxes, Highway Ones, some Artist Signature models, etc. Just look for 1.685"/43mm on the specs instead of 1.650"/42mm.

edited to add: While Fender lists "1.650" for Mexican Standards, American Vintage, and some others, I'm not sure that's correct -- it's only about 1/32" narrower than 1.685". The traditional Fender nut widths are 1 9/16" (1.562), 1 5/8" (1.625), and 1 11/16" (1.685). 1.650 is about halfway between 1 5/8 & 1 11/16.

Interesting! Thanks for the reply, it doesn't seem like 1mm would make a difference, but I notice it when switching from my acoustic 1 11/16, to my strat, 1.65.

I was thinking of building a strat and I'm deciding on nut width...