A systematic study on the structural and magnetic properties of the Rfe10.5V1.5Nx series, where R=Y, Ce, Nd, Sm, Gd, Tb, Dy, Ho, Er, has been carried out by X-ray diffraction and magnetic measurements. Rfe10.5V1.5Nx compounds show a higher Curie temperature and a larger saturation magnetization due to the lower content of V compared with Rfe10V2Nx In NdRfe10.5V1.5Nx the c-axis is the easy axis from 0 K to Tc, the anisotropy field is up to 185 kOe at 1.5 k and 102 kOe at room temperature with a combination of a high Curie temperature of 784 K and a large room temperature saturation magnetization of 139.1 emu/g, the intrinsic magnetic properties are favourable for permanent magnet applications.