STANDARD TIGHTENING TORQUES 3.
PLUGS 00-14 Hex plugs Threaded plugs with hex socket head Thread size Wrench Torque Nm ±10% Wrench Torque Nm ±10% METRIC THREADS M6x1 10 10 – – M8x1 13 12 – – M10x1 13 14 5 14 M10x1.25 13 14 – – M10x1.5 13 14 – – M12x1.25 17 30 – – M12x1.5 17 30 6 30 M12x1.75 17 30 – – M14x1.5 19 40 6 40 M14x2 19 40 – – M16x1.5 22 48 8 48 M16x2 22 48 – – M18x1.5 17 58 10 58 M18x2.5 17 58 – – M20x1.5 19 65 – – M22x1.5 – – 12 73 M24x1.5 22 80 12 80 M24x2 22 80 – – M27x2 22 100 – – M28x1.5 – – 17 110 M30x1.5 22 130 – – M32x1.5 – – 19 150 M35x1.5 – – 22 180 M40x1.5 – – 24 225 THREADS IN INCHES G 1/8” 14 13 – – G 1/4” 19 37 – – G 3/8” 22 53 – – G 1/2” 19 73 – – G 5/8” 22 85 – – G 3/4” 22 100 – – G 1” 22 160 – –