This paper reports on moment detection by three integrated tactile sensors that detect 3-axis forces. In this study, the three integrated tactile sensors were connected along a serial bus and were mounted in a triangle shape on a circuit board. Out-of-plane moment applied on the circuit board was measured using the shearing forces and a geometric relationship of the triangle sensor allay. The principle of the proposed moment detection method was demonstrated. The experimental results showed that the sensitivity and the nonlinearity were 1.10 count/N·m and ±16% full scale, respectively. The resolution of the obtained moment was below 0.015 N·m. The moment detection ability enables the partner robots to grasp objects correctly and to interact softly with human.