Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number J5071P4 found under Electron Tube by Conrac Systems Inc. The National Stock Number assigned to this part is 5960004340379, 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 J5071P4.