510 Thread Connector
The most popular and common style of threading for electronic cigarettes available. Originally developed by the company JoyE, it quickly became the standard within the industry. It also has whats known as a male thread.
All standard ego batterys and the majority of mods have a 510 connector. Almost all new tanks and atomizers now come with a 510 thread connector. For those e cigarettes that don't have a 510 connector there are adapters to change the thread type to match your electronic cigarette.