Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 70 FLK 109 found under Filter Band Pass by Microwave Applications Group Inc. The National Stock Number assigned to this part is 5915011091873, 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 70 FLK 109.