Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AT-404-040 found under Mounting Pad Electrical Electron by Henkel Corp. The National Stock Number assigned to this part is 5999011676171, and the Federal Supply Class is 5999 Miscellaneous Electrical And Electronic Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AT-404-040.