Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 15303-13 found under Guard Electrical Co by First Electronics Corporation The. The National Stock Number assigned to this part is 5935014690705, and the Federal Supply Class is 5935 Connectors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 15303-13.