Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MCG120-120 found under Arrester Electrical Surge by Mcg Electronics Inc. The National Stock Number assigned to this part is 5920011219636, 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 MCG120-120.