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- 21:21, 14 January 2026 Admin talk contribs created page F4:Circular Runout Validation (Created page with "{{Author Credit |author=Admin }} == Summary == F4 validates circular runout against the ASME logic in the F4 Application and enforces datum, surface, modifier, and pattern rules. == Validation rules == * A primary datum reference is required; tertiary datum references are not allowed. * Circular runout is valid only for surfaces that surround or intersect the datum axis. * Circular runout cannot be applied to a pattern. * FOS linkage is not allowed for c...")