Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BC 11MM 180 SC found under Honing Tool Cylinder by Brush Research Manufacturing Co Inc. The National Stock Number assigned to this part is 7920015867340, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BC 11MM 180 SC.