Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 47S00I40U16K found under Switch Push And Light I by Staco Systems Inc. The National Stock Number assigned to this part is 5930004945905, 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 47S00I40U16K.