Lighted nocks size

[TBark]

I had Fire nocks 5-6 yrs ago, but now I need more or something else.
Nocturnal and others are showing the closest ID to mine as 6.2 mm or .244”.
My Carbon express maxima 350’s are giving me 6.05 or maybe 6.1 on callipers.
So are these the size I need or is there another a hair smaller?
Tks,

TBark