Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GC403 40 found under Ring Retaining by Flight Refuelling Limited T A Co. The National Stock Number assigned to this part is 5325996089628, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GC403 40.