How to get maximum for 1 single stat ?

For level 85+
For : STR

+15 STR from dyes.
+3 STR from hat.

What else ?

Edited
What about : DEX, CON, INT, WIT, MEN

in case of STR:
+3 STR from territory wards(gludio/giran/rune)
+3 STR from R99 Eternal Heavy/Light(depends on set option)
+1 STR from armor/hat augument per piece
+"x" STR from OE armor set/piece +10(not confirmed, i saw a somewhere a table with +x stat after OE armor in GoD, later i'll try to find the link)