Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EM010173856EM1013-3-7 found under Heating Element Electrical Nonim by E And M Equipment Co. The National Stock Number assigned to this part is 4520010173856, 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 EM010173856EM1013-3-7.