Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MS21353 01-331 found under Switch Toggle by De Marzi Victor. The National Stock Number assigned to this part is 5930010117445, 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 MS21353 01-331.