Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SBR40 found under Brake Machine Sheet Metal Hand O by U S Air Tool Co Inc. The National Stock Number assigned to this part is 3441015252159, and the Federal Supply Class is 3441 Bending And Forming Machines. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SBR40.