Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ET2-251-3685 found under Heating Elementelectricalimmer by J W F Technologies Llc. The National Stock Number assigned to this part is 2590016803719, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ET2-251-3685.