Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MSP50AB1-20 found under Pumping Unitsewage by Myers F E Co. The National Stock Number assigned to this part is 4630016822514, and the Federal Supply Class is 4630 Sewage Treatment Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MSP50AB1-20.