Descriptions:Momentary type, NC NO COM contact, 3 terminals.This metal push button switch is suitable for 16mm diameter mounting hole.Used widely: Great for Power Button Switch, Led Switch, DIY projects or any circuit controls. Specification:Item Name: Push Button SwitchAction Type: Momentary TypeHead Shape: Flat HeadContact: NC NO COMSwitch Rating: 250V 5ASwitch Color: Silver ToneLamp Voltage: No Light IncludePin Number: 3Thread Diameter: 16mm / 0.62inTotal Size: 35 x 21.5mm (H*W)Material: Copper Nickel Plating Package Content:1 x Push Button Switch