This ultra-miniature M3 threaded quick disconnect assembly is comprised of a brass internal end and a stainless steel external end. The entire assembly weighs only 3.4 grams. The internal end is designed with an automatic shut-off valve and an M3 internal thread. It is only about 16.7 mm long and has a 6 mm hexagonal body. The external end is designed with an M3 external thread and includes a captured O-ring seal for leak-tight connection. It is only about 11 mm long and has a 5 mm hexagonal body.