Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CMS 103 found under Shell Fuse by Ferraz Shawmut Inc. The National Stock Number assigned to this part is 5920015865668, and the Federal Supply Class is 5920 Fuses Arresters Absorbers And Protector. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CMS 103.