Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4378C0004-1 found under Exped Tr Sys by Sotera Engineered Solutions Llc. The National Stock Number assigned to this part is 5419015397177, and the Federal Supply Class is 5419 Collective Modular Support System. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4378C0004-1.