Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AF4001R40 found under by Winco Fluid Power Inc. The National Stock Number assigned to this part is 4310012363026, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AF4001R40.