Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 140FS10-50 found under Filter Band Pass by Dover Corp. The National Stock Number assigned to this part is 5915015504044, and the Federal Supply Class is 5915 Filters And Networks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 140FS10-50.