Petcock is surface oxidation treated for weathering. Fuel Filter & Gasket Included.
Thread size is determined by measuring the OD (outside diameter) or "male" thread.
The thread pitch is the # of threads per millimeter and must be measured with a thread pitch gauge.
There are only three thread sizes (that I'm aware of) used on Chinese brand petcocks.
16 x 1.5mm, 14 x 1.0mm & 10 x 1.25mm "male threads".
16 x 1.5mm has an ID of 14.5mm and 14 x 1.0mm has an ID of 13mm.
Specification:
Nut threading/Inlet Port: 10mm x 1.25mm "male threads"
Hex Nut: 14mm
Inlet: Filter screen
Outlet Port: 1/4" hose barb
Total length: Approx. 8.8cm
Function: ON/OFF 90 degree rotation