Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 40015 found under Ball Nut Tool Speci by The Entwistle Company. The National Stock Number assigned to this part is 2030010187906, and the Federal Supply Class is 2030 Deck Machine. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 40015.