Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BO-3209-7 found under Cord Assembly Dough Heater Proof by Atlas Metal Industries Inc. The National Stock Number assigned to this part is 7310011774770, 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 BO-3209-7.