Tap Faucet Adaptor 1/2" (G20.955x1,814) to 12/16mm Hose/Tube. Schlauchanschlussadapter

Update 01.01.2019
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To make a more rigid design I made a version where shroud and thread are one part (Shroud&Thread.stl). I just added it to the other files.
Also I modified the connector so it can be printed upright without supports. Due to needed layer adhesion I recommend using only PETG when printing this upright. For all other materials I recommend printing the connector lying down as suggested below. Supports are only needed in case of printing the connector horizontally