METABO Hexagon nut SW 19 1/2"-20 UNF (627601000)

With female thread 1/2"-20 UNF; To drive the angle attachment 631078000 or the pump attachment 627640000 on a drill with a 1/2"-20 UNF threaded spindle, but no hexagon shoulder on the spindle, requires a 19 mm AF hexagon nut (SW 19) with 1/2"-20 UNF female thread.