bolt clamping force chart metric ng torque to achieve the desired preload. Usually expressed in Newton-meters (Nm) or kilogram-force meters (kgf·m). 5. Corresponding Clamping Force Measured in Newtons (N) or kilonewtons (kN). The actual preload achieved at specified torque. 6. Lubrication Conditions Lubricated vs. dry thre C Camille Swift Jul 11, 2026