In industrial processes such as coal or biomass combustion, particles can take irregular non-spherical shapes. However, in their numerical computations the assumption of spherical particle is customary, mainly because the fluid dynamic forces acting on such irregular particles are unknown to a large extent. This contribution aims to generate new information about the flow coefficients (forces and torques) experienced by nonspherical irregular particles with two different degrees of sphericity immersed in a plug flow at different Reynolds numbers up to 200. For this purpose, Direct Numerical Simulations (DNS) are carried out by means of the Ansys Fluent code using body fitted meshes where the irregular particle is well resolved. The flow coefficients are computed for each considered particle belonging to the same sphericity group, for a large number of orientations and the corresponding distributions are constructed. Such distributions are expected to be approximately Gaussian, represented by a mean value and a standard deviation and will be functions of Reynolds number and particle sphericity. The obtained drag coefficient shows the expected Sshaped behavior but the lift and torque coefficients exhibit variations in their behavior due to the irregularity of the surface. Moreover, the study extends to the determination of yaw and rolling torque components. The generated information will be useful to develop a statistical model for the fluid forces and torques acting on irregular particles in the frame of a Lagrangian approach.