Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MI1251H8AU found under Electron Tube by Computer Sciences Corporation. The National Stock Number assigned to this part is 5960013854247, 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 MI1251H8AU.