Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W12-400S-18G512 found under Computer Digital by Silicon Graphics Federal Llc. The National Stock Number assigned to this part is 7021015172439, and the Federal Supply Class is 7021 Adp Central Processing Unit Cpu Computer Digital. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like W12-400S-18G512.