Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54GG5-2281J found under Retainer Electron Tube by Innovative Data Technology. The National Stock Number assigned to this part is 5960009979511, 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 54GG5-2281J.