Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HS4228-1101 found under Relay Electromagnet by Boeing Company The. The National Stock Number assigned to this part is 5945011871769, and the Federal Supply Class is 5945 Relays And Solenoids. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HS4228-1101.