Now, it's possible this countersink is there now but I am having an issue looking at all of the choices from the Nut Spec part of the dialog box. I an only see the primary a few options down to nut clearance.EvanReese Member, Mentor Posts: 2,471 ✭✭✭✭✭ September 2023 @petr_škaloud I exploit heat established inserts also, but I'm not sure