External thread : M 16 x 1.5, Characteristic 3 : Hexagon, Customizable : No, Unit : STD Pack 50, Internal Thread : PG 9, SW mm : 18, Thread length mm : 7, Compete length mm : 17.5, Material : Nickel-plated brass, O-ring material : Nitril, Characteristic 1 : Metric external thread, Characteristic 2 : PG internal thread