Field assembly connector or fast connector is an innovative field installable optical fibre connector designed for simple and fast field termination of single fibers. Without using additional assembling tools, field assembly connector can be quickly and easily connected to the drop cable and indoor cable, which saves a lot of required termination time. It is specially designed with the patented mechanical splice body that includes a factory-mounted fibre stub and a pre-polished ceramic ferrule. Field assembly connectors enable fast and on-site installation of 250μ, 900μ, 3.0mm and 1.6mm x 2.0mm, 2.0mm x 3.0mm cable type connectors even when the user has no access to power. The whole installation process only takes about 2 minutes which greatly improves the working efficiency.