FSMSM=3.5X6 SMT TACT SPST-NO Contact Current Rating: 50 mA Actuator Style: Rectangular Actuator Operating Function: Off (On) Contact Base Material: Brass Switch Contact Plating Material: Silver Tactile Switch | 50 mA Rectangular Actuator Off (On) Brass | Part Number: FSMSM | Internal Number: 1437566-3 | TE Connectivity