Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4K2071 found under Line Trap Band Supp by Abb Inc. The National Stock Number assigned to this part is 5915001061676, 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 4K2071.