Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 250-20-M-NSU LH-E-W U found under Dishwashing Machine by Insinger Machine Company The. The National Stock Number assigned to this part is 7320015349214, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 250-20-M-NSU LH-E-W U.