Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 57000250-1 found under Contact Ground Spindle by I S S Div Of Sperry Univac. The National Stock Number assigned to this part is 7025000076955, and the Federal Supply Class is 7025 Adp Input Output And Storage Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 57000250-1.