Two-directional N-2 desorption was found in N2O dissociation on Rh(110), Ir(110), and Pd(110) below 160 K by angle-resolved thermal desorption. N2O(a) is mostly dissociated during heating procedures, emitting N-2(g) and leaving O(a). N-2 showed four desorption peaks in the temperature range of 110-200 K. One of them commonly showed a cosine distribution, whereas the others sharply collimated off the surface normal in the plane along the [001] direction. The collimation angle was about 70degrees on Rh(110), 65degrees on Ir(110), and 43degrees-50degrees on Pd(110). A high-energy-atom assisted desorption model was proposed for N-2 inclined emission.