momentary switch/Tactile momentary switch/contact switch all are same. Now got an knowledge about the three technical names of single switch my friend.
All of the ones I’ve used have been SPST switches with the 2 legs that point toward each other connected together in electrically identical pairs; the switching is done from pair to pair.
Note: see closely the above pic info – pin shape and its leg facing direction, you can easily discriminate the how the connection will be inside the switch
picture below will show you the internal connection of diagram
Quick info: In case of tactile switch, don’t worry about pin number, all you need to know/understand is which two pins are connected together
These switches were designed for printed circuit boards, not solderless breadboards, but they’ll work OK if you straighten the pins a little bit.
For working of momentary switch/Tactile momentary switch/contact switch, follow my next post