Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 17EFSC (440 60 3 found under Fryer Deep Fat by Frymaster Dean. The National Stock Number assigned to this part is 7310011707312, 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 17EFSC (440 60 3.