Special Order: FSM4JRT=FSM 2 LEAD ON RADIAL T Contact Current Rating: 50 mA Actuator Style: Round Actuator Operating Function: NO Contact Base Material: Copper Alloy Switch Contact Plating Material: Silver Tactile Switch | 50 mA Round Actuator Copper Alloy | Part Number: FSM4JRT | Internal Number: 4-1437565-0 | TE Connectivity | ALCOSWITCH