Bracelet width vs. lug width

Posts
7,214
Likes
23,384
Question: typically, how much smaller is any bracelet end-piece than the lug it’s supposed to fit into? Thanks.
 
Posts
4,396
Likes
10,524
I would never fit a 19mm on a 20mm. The gap is too big for my taste.
.1mm to .3mm is visually ok to my eye. I'm sure respected mfgs are even tighter.
$.02
 
Posts
7,214
Likes
23,384
Supposedly, the gap on flat-links is .3mm. Looks bit too large for my eye: