Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1C5277-3G1 found under Support Engine Forw by Acme Machine Products. The National Stock Number assigned to this part is 4920009120078, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1C5277-3G1.