Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SG 420 found under Fuse Inclosed Link by Rtie Holdings Llc. The National Stock Number assigned to this part is 5920014534320, 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 SG 420.