Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 420 017 found under Rack Electronic Jun by Thermo Fisher Scientific Inc. The National Stock Number assigned to this part is 5975016326223, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 420 017.