Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5Y3GT found under Electron Tube by General Dynamics C4 Systems Inc. The National Stock Number assigned to this part is 5960001077583, and the Federal Supply Class is 5960 Electron Tubes And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5Y3GT.