Now, perhaps this countersink is there now but I am acquiring a difficulty looking at all of the choices from the Nut Spec portion of the dialog box. I an only see the primary 3 possibilities right down to nut clearance. EvanReese Member, Mentor Posts: 2,471 ✭✭✭✭✭ September 2023 @petr_škaloud https://ingmarj147bip0.sasugawiki.com/user