Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 56A30-01-4-03N found under Switchrotary by Grayhill Inc. The National Stock Number assigned to this part is 5930016877247, 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 56A30-01-4-03N.