This ¼-28 UNF thread has been added to the PMC12 product line. The coupling insert is designed to allow users to easily incorporate quick disconnect technology into existing ¼-28 flat bottom ports and small-diameter tubing applications. Once this new coupling insert is threaded into a port, the mating coupling body can be used to easily connect and disconnect the tubing. This eliminates the cumbersome task of threading and unthreading HPLC-style nuts and ferrules, saving time, and ending drips and spills.