Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LF500 found under Fuse Link Electrica by Souriau Usa Inc. The National Stock Number assigned to this part is 5920005643568, 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 LF500.