Shrinkfast 975 Heat Gun Flat Point Screw - Part# 16
The Shrinkfast 975 Heat Gun Flat Point Screw (Part# 16) screws into the Trigger (part #17A). This screw is adjustable and is what makes contact with the plunger in the Valve Assembly (part #22). Its depth determines how hard one would have to squeeze the trigger in order to start releasing fuel into the Fuel Line.