Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D4B 4571N found under Switch Sensitive by Omron Electronics Llc. The National Stock Number assigned to this part is 5930016427602, 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 D4B 4571N.