Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R5ABLKBLKFF0 found under Switch Toggle by E Switch Inc. The National Stock Number assigned to this part is 5930015220437, 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 R5ABLKBLKFF0.