Knm

kNm, written as kN·m or kNm, is the unit of torque or moment in the metric system. It denotes the moment produced by a force of 1 kilonewton applied at a lever arm of 1 meter. Since 1 kilonewton equals 1,000 newtons, 1 kNm equals 1,000 N·m. The torque T is the product of force and lever arm: T = F × r. When using kN and meters, the result is in kN·m (or kNm). For example, a 4 kN force applied at 0.5 m from the axis produces a torque of 2 kN·m.

Applications: kNm is commonly used in engineering to express large moments or torques, such as structural design moments, machine component torque, and bolt or fastener torque ratings for large assemblies. In structural engineering, moments on beams and frames are often reported in kNm; in mechanical design, drive train torque or rotor load can be given in kNm.

Notes: Torque is a vector quantity with both magnitude and direction; kNm is a scaled unit of torque. It is distinct from energy units such as kilowatt-hours or joules. The base SI unit for torque is N·m; kNm is simply a multiple used for convenience at larger magnitudes.