Left hand external thread and nut, FPT internal thread, for use with tanks having a wall thickness of 1/16" to 1/2". Polypropylene body and nut, polyethylene fariction washer, EPDM sealing washer. The tank fittings are non-food grade. Left hand external thread and nut FPT internal thread for use with tanks having a wall thickness of 1/16" to 1/2". Polypropylene body and nut polyethylene fariction washer EPDM sealing washer. The tank fittings are non-food grade.nullnullBULKHEAD FITTING POLY Thread FPT=1 Hole Size In=1-3/4