Speedflow 1/2" NPT Male to 5/8"-18 Female Reducer Bush.
Mechanical Water Temperature Gauges which use a 5/8"-18 thread can be adpated to 1/2"NPT ports with this adapter.
Manufactured from marine quality 6061-T6 billet aluminium for superior corrosion and fatigue resistance.
Blue hard anodised aluminium construction (Also available in Black anodised finish).
NPT Thread seals on a Taper with Thread Tape or Pipe Sealant