Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 85056K found under Mechanical Cal Kit by Keysight Technologies Inc. The National Stock Number assigned to this part is 5210014769580, and the Federal Supply Class is 5210 Measuring Tools Craftsmens. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 85056K.