Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6B340-1090 20-0 0 found under Filter Band Pass by K And L Microwave Inc. The National Stock Number assigned to this part is 5915011051652, 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 6B340-1090 20-0 0.