STANDARD TIGHTENING TORQUE 2. TIGHTENING TORQUE FOR NUTS OF FLARED Use these torques for nut part of flared.
Sealing surface SK818-5 SK820-5 turbo 00-9 Thread diameter of nut part (mm) Width across flats of nut part (mm) TIGHTENING TORQUE kgm Nm 1/2” - 20 9/16” - 18 3/4” - 16 7/8” - 14 1.1/16 - 12 1.5/16 - 12 1.5/8 - 12 22 33 17 17 22 27 32 38 50 27 41 2.6±0.5 4±0.5 6.7±2 8±2 9.7±3 17±3 20±5 8±2 20±5 25.5±4.9 39.2±4.9 65.7±19.6 78.5±19.6 95.15±29.4 166.7±29.4 196.2±49 78.5±19.6 196.2±49 Thread diameter of nut part (mm) Width across flats of nut part (mm) TIGHTENING TORQUE kgm Nm 9/16” - 18 11/16” - 16 13/16” - 16 1” - 14 1.3/16 - 12 1.7/16 - 12 1.11/16 - 12 2” - 12 17 22 24 30 36 41 50 57 2.3–2.5 3.4–3.9 5.2–5.8 8.2–9.2 12.2–13.3 15.3–17.3 18.4–20.4 20.4–24.4 23–25 33–38 51–57 80–90 120–130 150–170 180–200 200–240