Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B11 5-8 18THD found under Ball Plastic Barrie by Reid Supply Company. The National Stock Number assigned to this part is 1710000979256, 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 B11 5-8 18THD.