Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1390-0224 found under Switch Lock by Hewlett Packard Co. The National Stock Number assigned to this part is 5930010540275, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1390-0224.