What is the correct sequence for tightening bolts in a joint?

• A. In a clockwise pattern starting at the top
• B. From the most rigid part of the joint to its free edges
• C. From the least rigid part outward
• D. Random order

Answer: (B)

Tightening bolts in a joint should flow from the stiffest area outward. Starting with the most rigid portion establishes the correct alignment early, because that part resists deformation and defines the joint’s true position. As you continue tightening, you progressively pull toward the free edges, allowing the less rigid areas to settle evenly without pulling the whole assembly out of alignment. This approach minimizes distortion and ensures even clamping across the joint. If you tighten from the top or in a random or outward-from-least-rigid sequence, the flexible parts can move differently and the joint can rack or misalign as the center isn’t yet securely seated. So, tightening from the most rigid part toward the edges is the best practice.