Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 451 11257 found under Battery Power Suppl by Dell Corporation. The National Stock Number assigned to this part is 6130016089072, and the Federal Supply Class is 6130 Converters Electrical Non Rotating. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 451 11257.