Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HDA-425B-0040 found under Heating Element Electrical Nonim by Ogden Mfg Co. The National Stock Number assigned to this part is 4520009174790, 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 HDA-425B-0040.