Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MCL-12 found under by Procurement Support Industries Inc. The National Stock Number assigned to this part is 5920007752274, 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 MCL-12.