Enter your bolt count to see a star/crisscross tightening pattern — each step jumps roughly across the flange rather than to the next bolt over, so the gasket seats evenly. Add a target torque to see the typical 30/60/100% pass breakdown.
Even numbers only (4–64) — rounds automatically.
Number your bolts 1–8 clockwise starting from the top. Tighten in this order: 1 → 5 → 2 → 6 → 3 → 7 → 4 → 8
Need to work out the target torque from a bolt tension first? Use the Tension/Torque Calculator.
This shows one common star/crisscross pattern and a typical pass sequence — many bolting procedures (company QA manuals, project specs) define their own exact pattern and pass count. Always follow your project’s actual bolting procedure; use this as a general reference. Nothing you enter here is sent to or stored on our servers.
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