T-bolt can be put into the aluminum profile groove directly, in the installation process, it can be automatically positioned to lock, often used with flange nuts, is the standard supporting the installation of corner pieces of connectors, according to the profile groove width and different series of profiles to choose to use.T-bolt belongs to the movable anchor bolts. At present, the commonly used T-bolts include DIN186 T-type square neck bolts, GB37, and DIN188T-type double neck bolts.