Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5158-700-56 found under Switch Solid State by H R Simon And Company Inc. The National Stock Number assigned to this part is 5930012434089, 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 5158-700-56.