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Engineering tools

Flange bolt
tightening sequence

Enter the number of bolts and the target torque; see the cross pattern, the torque for each pass and a step-by-step drawing.

Flange
Unit
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Tightening order

    Pass plan

    Numbers are bolt positions clockwise (1 = 12 o'clock). Values follow common practice; for gasketed joints, follow the gasket manufacturer's procedure and ASME PCC-1.