A Y McDonald co. AY 5186-204 780R636WDPP 665X36 SGL RISER PIT HBP FPBVxFPDCK MNPT (Male National Pipe Thread) xMNPT (Male National Pipe Thread) AY 5186-204780R636WDPP 665X36 SGL RISER PIT HBP FPBVxFPDCK MNPT (Male National Pipe Thread) xMNPT (Male National Pipe Thread)